Merge branch 'dgud/wx/fix-unicode-chardata/ERL-270/OTP-13934' into maint

* dgud/wx/fix-unicode-chardata/ERL-270/OTP-13934:
  Fix guard test for chardata

80 files changed, 390 insertions, 390 deletions

diff --git a/lib/wx/src/gen/wxArtProvider.erl b/lib/wx/src/gen/wxArtProvider.erl
index da220a90c8..b52c141b1f 100644
--- a/lib/wx/src/gen/wxArtProvider.erl
+++ b/lib/wx/src/gen/wxArtProvider.erl
@@ -40,7 +40,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 	Id::unicode:chardata().
 
 getBitmap(Id)
- when is_list(Id) ->
+ when ?is_chardata(Id) ->
   getBitmap(Id, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxartprovider.html#wxartprovidergetbitmap">external documentation</a>.
@@ -49,7 +49,7 @@ getBitmap(Id)
 	Option :: {'client', unicode:chardata()}
 		 | {'size', {W::integer(), H::integer()}}.
 getBitmap(Id, Options)
- when is_list(Id),is_list(Options) ->
+ when ?is_chardata(Id),is_list(Options) ->
   Id_UC = unicode:characters_to_binary([Id,0]),
   MOpts = fun({client, Client}, Acc) ->   Client_UC = unicode:characters_to_binary([Client, $_, $C,0]),[<<1:32/?UI,(byte_size(Client_UC)):32/?UI,(Client_UC)/binary, 0:(((8- ((0+byte_size(Client_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
           ({size, {SizeW,SizeH}}, Acc) -> [<<2:32/?UI,SizeW:32/?UI,SizeH:32/?UI,0:32>>|Acc];
@@ -63,7 +63,7 @@ getBitmap(Id, Options)
 	Id::unicode:chardata().
 
 getIcon(Id)
- when is_list(Id) ->
+ when ?is_chardata(Id) ->
   getIcon(Id, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxartprovider.html#wxartprovidergeticon">external documentation</a>.
@@ -72,7 +72,7 @@ getIcon(Id)
 	Option :: {'client', unicode:chardata()}
 		 | {'size', {W::integer(), H::integer()}}.
 getIcon(Id, Options)
- when is_list(Id),is_list(Options) ->
+ when ?is_chardata(Id),is_list(Options) ->
   Id_UC = unicode:characters_to_binary([Id,0]),
   MOpts = fun({client, Client}, Acc) ->   Client_UC = unicode:characters_to_binary([Client, $_, $C,0]),[<<1:32/?UI,(byte_size(Client_UC)):32/?UI,(Client_UC)/binary, 0:(((8- ((0+byte_size(Client_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
           ({size, {SizeW,SizeH}}, Acc) -> [<<2:32/?UI,SizeW:32/?UI,SizeH:32/?UI,0:32>>|Acc];
diff --git a/lib/wx/src/gen/wxAuiManager.erl b/lib/wx/src/gen/wxAuiManager.erl
index 37693060e1..a33e5e9a65 100644
--- a/lib/wx/src/gen/wxAuiManager.erl
+++ b/lib/wx/src/gen/wxAuiManager.erl
@@ -177,7 +177,7 @@ getManager(#wx_ref{type=WindowT,ref=WindowRef}) ->
       (This, Window) -> wxAuiPaneInfo:wxAuiPaneInfo() when
 	This::wxAuiManager(), Window::wxWindow:wxWindow().
 getPane(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxAuiManager),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxAuiManager_GetPane_1_0,
@@ -223,7 +223,7 @@ insertPane(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=WindowT,ref=WindowRef},#
 -spec loadPaneInfo(This, Pane_part, Pane) -> 'ok' when
 	This::wxAuiManager(), Pane_part::unicode:chardata(), Pane::wxAuiPaneInfo:wxAuiPaneInfo().
 loadPaneInfo(#wx_ref{type=ThisT,ref=ThisRef},Pane_part,#wx_ref{type=PaneT,ref=PaneRef})
- when is_list(Pane_part) ->
+ when ?is_chardata(Pane_part) ->
   ?CLASS(ThisT,wxAuiManager),
   Pane_part_UC = unicode:characters_to_binary([Pane_part,0]),
   ?CLASS(PaneT,wxAuiPaneInfo),
@@ -235,7 +235,7 @@ loadPaneInfo(#wx_ref{type=ThisT,ref=ThisRef},Pane_part,#wx_ref{type=PaneT,ref=Pa
 	This::wxAuiManager(), Perspective::unicode:chardata().
 
 loadPerspective(This,Perspective)
- when is_record(This, wx_ref),is_list(Perspective) ->
+ when is_record(This, wx_ref),?is_chardata(Perspective) ->
   loadPerspective(This,Perspective, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxauimanager.html#wxauimanagerloadperspective">external documentation</a>.
@@ -243,7 +243,7 @@ loadPerspective(This,Perspective)
 	This::wxAuiManager(), Perspective::unicode:chardata(),
 	Option :: {'update', boolean()}.
 loadPerspective(#wx_ref{type=ThisT,ref=ThisRef},Perspective, Options)
- when is_list(Perspective),is_list(Options) ->
+ when ?is_chardata(Perspective),is_list(Options) ->
   ?CLASS(ThisT,wxAuiManager),
   Perspective_UC = unicode:characters_to_binary([Perspective,0]),
   MOpts = fun({update, Update}, Acc) -> [<<1:32/?UI,(wxe_util:from_bool(Update)):32/?UI>>|Acc];
diff --git a/lib/wx/src/gen/wxAuiNotebook.erl b/lib/wx/src/gen/wxAuiNotebook.erl
index 25a1eda0f3..5d47bc8d6c 100644
--- a/lib/wx/src/gen/wxAuiNotebook.erl
+++ b/lib/wx/src/gen/wxAuiNotebook.erl
@@ -121,7 +121,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef}, Options)
 	This::wxAuiNotebook(), Page::wxWindow:wxWindow(), Caption::unicode:chardata().
 
 addPage(This,Page,Caption)
- when is_record(This, wx_ref),is_record(Page, wx_ref),is_list(Caption) ->
+ when is_record(This, wx_ref),is_record(Page, wx_ref),?is_chardata(Caption) ->
   addPage(This,Page,Caption, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxauinotebook.html#wxauinotebookaddpage">external documentation</a>.
@@ -130,7 +130,7 @@ addPage(This,Page,Caption)
 	Option :: {'select', boolean()}
 		 | {'bitmap', wxBitmap:wxBitmap()}.
 addPage(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PageT,ref=PageRef},Caption, Options)
- when is_list(Caption),is_list(Options) ->
+ when ?is_chardata(Caption),is_list(Options) ->
   ?CLASS(ThisT,wxAuiNotebook),
   ?CLASS(PageT,wxWindow),
   Caption_UC = unicode:characters_to_binary([Caption,0]),
@@ -243,7 +243,7 @@ getSelection(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxAuiNotebook(), Page_idx::integer(), Page::wxWindow:wxWindow(), Caption::unicode:chardata().
 
 insertPage(This,Page_idx,Page,Caption)
- when is_record(This, wx_ref),is_integer(Page_idx),is_record(Page, wx_ref),is_list(Caption) ->
+ when is_record(This, wx_ref),is_integer(Page_idx),is_record(Page, wx_ref),?is_chardata(Caption) ->
   insertPage(This,Page_idx,Page,Caption, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxauinotebook.html#wxauinotebookinsertpage">external documentation</a>.
@@ -252,7 +252,7 @@ insertPage(This,Page_idx,Page,Caption)
 	Option :: {'select', boolean()}
 		 | {'bitmap', wxBitmap:wxBitmap()}.
 insertPage(#wx_ref{type=ThisT,ref=ThisRef},Page_idx,#wx_ref{type=PageT,ref=PageRef},Caption, Options)
- when is_integer(Page_idx),is_list(Caption),is_list(Options) ->
+ when is_integer(Page_idx),?is_chardata(Caption),is_list(Options) ->
   ?CLASS(ThisT,wxAuiNotebook),
   ?CLASS(PageT,wxWindow),
   Caption_UC = unicode:characters_to_binary([Caption,0]),
@@ -304,7 +304,7 @@ setPageBitmap(#wx_ref{type=ThisT,ref=ThisRef},Page,#wx_ref{type=BitmapT,ref=Bitm
 -spec setPageText(This, Page, Text) -> boolean() when
 	This::wxAuiNotebook(), Page::integer(), Text::unicode:chardata().
 setPageText(#wx_ref{type=ThisT,ref=ThisRef},Page,Text)
- when is_integer(Page),is_list(Text) ->
+ when is_integer(Page),?is_chardata(Text) ->
   ?CLASS(ThisT,wxAuiNotebook),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxAuiNotebook_SetPageText,
diff --git a/lib/wx/src/gen/wxAuiPaneInfo.erl b/lib/wx/src/gen/wxAuiPaneInfo.erl
index 858da200be..c8273269ac 100644
--- a/lib/wx/src/gen/wxAuiPaneInfo.erl
+++ b/lib/wx/src/gen/wxAuiPaneInfo.erl
@@ -117,7 +117,7 @@ bottomDockable(#wx_ref{type=ThisT,ref=ThisRef}, Options)
 -spec caption(This, C) -> wxAuiPaneInfo() when
 	This::wxAuiPaneInfo(), C::unicode:chardata().
 caption(#wx_ref{type=ThisT,ref=ThisRef},C)
- when is_list(C) ->
+ when ?is_chardata(C) ->
   ?CLASS(ThisT,wxAuiPaneInfo),
   C_UC = unicode:characters_to_binary([C,0]),
   wxe_util:call(?wxAuiPaneInfo_Caption,
@@ -689,7 +689,7 @@ movable(#wx_ref{type=ThisT,ref=ThisRef}, Options)
 -spec name(This, N) -> wxAuiPaneInfo() when
 	This::wxAuiPaneInfo(), N::unicode:chardata().
 name(#wx_ref{type=ThisT,ref=ThisRef},N)
- when is_list(N) ->
+ when ?is_chardata(N) ->
   ?CLASS(ThisT,wxAuiPaneInfo),
   N_UC = unicode:characters_to_binary([N,0]),
   wxe_util:call(?wxAuiPaneInfo_Name,
diff --git a/lib/wx/src/gen/wxBitmap.erl b/lib/wx/src/gen/wxBitmap.erl
index e7830dae9b..4a6e308d8d 100644
--- a/lib/wx/src/gen/wxBitmap.erl
+++ b/lib/wx/src/gen/wxBitmap.erl
@@ -56,7 +56,7 @@ new() ->
 	Image::wxImage:wxImage().
 
 new(Filename)
- when is_list(Filename) ->
+ when ?is_chardata(Filename) ->
   new(Filename, []);
 
 new(Image)
@@ -86,7 +86,7 @@ new(Width,Height)
  when is_integer(Width),is_integer(Height) ->
   new(Width,Height, []);
 new(Filename, Options)
- when is_list(Filename),is_list(Options) ->
+ when ?is_chardata(Filename),is_list(Options) ->
   Filename_UC = unicode:characters_to_binary([Filename,0]),
   MOpts = fun({type, Type}, Acc) -> [<<1:32/?UI,Type:32/?UI>>|Acc];
           (BadOpt, _) -> erlang:error({badoption, BadOpt}) end,
@@ -230,7 +230,7 @@ getSubBitmap(#wx_ref{type=ThisT,ref=ThisRef},{RectX,RectY,RectW,RectH})
 	This::wxBitmap(), Name::unicode:chardata().
 
 loadFile(This,Name)
- when is_record(This, wx_ref),is_list(Name) ->
+ when is_record(This, wx_ref),?is_chardata(Name) ->
   loadFile(This,Name, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxbitmap.html#wxbitmaploadfile">external documentation</a>.
@@ -239,7 +239,7 @@ loadFile(This,Name)
 	This::wxBitmap(), Name::unicode:chardata(),
 	Option :: {'type', wx:wx_enum()}.
 loadFile(#wx_ref{type=ThisT,ref=ThisRef},Name, Options)
- when is_list(Name),is_list(Options) ->
+ when ?is_chardata(Name),is_list(Options) ->
   ?CLASS(ThisT,wxBitmap),
   Name_UC = unicode:characters_to_binary([Name,0]),
   MOpts = fun({type, Type}, Acc) -> [<<1:32/?UI,Type:32/?UI>>|Acc];
@@ -261,7 +261,7 @@ ok(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxBitmap(), Name::unicode:chardata(), Type::wx:wx_enum().
 
 saveFile(This,Name,Type)
- when is_record(This, wx_ref),is_list(Name),is_integer(Type) ->
+ when is_record(This, wx_ref),?is_chardata(Name),is_integer(Type) ->
   saveFile(This,Name,Type, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxbitmap.html#wxbitmapsavefile">external documentation</a>.
@@ -270,7 +270,7 @@ saveFile(This,Name,Type)
 	This::wxBitmap(), Name::unicode:chardata(), Type::wx:wx_enum(),
 	Option :: {'palette', wxPalette:wxPalette()}.
 saveFile(#wx_ref{type=ThisT,ref=ThisRef},Name,Type, Options)
- when is_list(Name),is_integer(Type),is_list(Options) ->
+ when ?is_chardata(Name),is_integer(Type),is_list(Options) ->
   ?CLASS(ThisT,wxBitmap),
   Name_UC = unicode:characters_to_binary([Name,0]),
   MOpts = fun({palette, #wx_ref{type=PaletteT,ref=PaletteRef}}, Acc) ->   ?CLASS(PaletteT,wxPalette),[<<1:32/?UI,PaletteRef:32/?UI>>|Acc];
diff --git a/lib/wx/src/gen/wxButton.erl b/lib/wx/src/gen/wxButton.erl
index c6686cdf10..f16e1a376e 100644
--- a/lib/wx/src/gen/wxButton.erl
+++ b/lib/wx/src/gen/wxButton.erl
@@ -163,7 +163,7 @@ setDefault(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setLabel(This, Label) -> 'ok' when
 	This::wxButton(), Label::unicode:chardata().
 setLabel(#wx_ref{type=ThisT,ref=ThisRef},Label)
- when is_list(Label) ->
+ when ?is_chardata(Label) ->
   ?CLASS(ThisT,wxButton),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:cast(?wxButton_SetLabel,
diff --git a/lib/wx/src/gen/wxCheckBox.erl b/lib/wx/src/gen/wxCheckBox.erl
index 6a15bec8b7..294831c3a6 100644
--- a/lib/wx/src/gen/wxCheckBox.erl
+++ b/lib/wx/src/gen/wxCheckBox.erl
@@ -92,7 +92,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 new(Parent,Id,Label)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   new(Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxcheckbox.html#wxcheckboxwxcheckbox">external documentation</a>.
@@ -103,7 +103,7 @@ new(Parent,Id,Label)
 		 | {'style', integer()}
 		 | {'validator', wx:wx_object()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -120,7 +120,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
 	This::wxCheckBox(), Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 create(This,Parent,Id,Label)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   create(This,Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxcheckbox.html#wxcheckboxcreate">external documentation</a>.
@@ -131,7 +131,7 @@ create(This,Parent,Id,Label)
 		 | {'style', integer()}
 		 | {'validator', wx:wx_object()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxCheckBox),
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
diff --git a/lib/wx/src/gen/wxChoicebook.erl b/lib/wx/src/gen/wxChoicebook.erl
index d1176889bd..61ba0fe47f 100644
--- a/lib/wx/src/gen/wxChoicebook.erl
+++ b/lib/wx/src/gen/wxChoicebook.erl
@@ -120,7 +120,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id, Options)
 	This::wxChoicebook(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 addPage(This,Page,Text)
- when is_record(This, wx_ref),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_record(Page, wx_ref),?is_chardata(Text) ->
   addPage(This,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxchoicebook.html#wxchoicebookaddpage">external documentation</a>.
@@ -129,7 +129,7 @@ addPage(This,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 addPage(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxChoicebook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -296,7 +296,7 @@ hitTest(#wx_ref{type=ThisT,ref=ThisRef},{PtX,PtY})
 	This::wxChoicebook(), N::integer(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 insertPage(This,N,Page,Text)
- when is_record(This, wx_ref),is_integer(N),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(N),is_record(Page, wx_ref),?is_chardata(Text) ->
   insertPage(This,N,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxchoicebook.html#wxchoicebookinsertpage">external documentation</a>.
@@ -305,7 +305,7 @@ insertPage(This,N,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 insertPage(#wx_ref{type=ThisT,ref=ThisRef},N,#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_integer(N),is_list(Text),is_list(Options) ->
+ when is_integer(N),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxChoicebook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -347,7 +347,7 @@ setPageImage(#wx_ref{type=ThisT,ref=ThisRef},N,ImageId)
 -spec setPageText(This, N, StrText) -> boolean() when
 	This::wxChoicebook(), N::integer(), StrText::unicode:chardata().
 setPageText(#wx_ref{type=ThisT,ref=ThisRef},N,StrText)
- when is_integer(N),is_list(StrText) ->
+ when is_integer(N),?is_chardata(StrText) ->
   ?CLASS(ThisT,wxChoicebook),
   StrText_UC = unicode:characters_to_binary([StrText,0]),
   wxe_util:call(?wxChoicebook_SetPageText,
diff --git a/lib/wx/src/gen/wxColourPickerCtrl.erl b/lib/wx/src/gen/wxColourPickerCtrl.erl
index 8ec710d5e3..2fe55018dc 100644
--- a/lib/wx/src/gen/wxColourPickerCtrl.erl
+++ b/lib/wx/src/gen/wxColourPickerCtrl.erl
@@ -169,7 +169,7 @@ getColour(#wx_ref{type=ThisT,ref=ThisRef}) ->
       (This, Col) -> 'ok' when
 	This::wxColourPickerCtrl(), Col::wx:wx_colour().
 setColour(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxColourPickerCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxColourPickerCtrl_SetColour_1_0,
diff --git a/lib/wx/src/gen/wxComboBox.erl b/lib/wx/src/gen/wxComboBox.erl
index 1f6e975cd7..3de2721f38 100644
--- a/lib/wx/src/gen/wxComboBox.erl
+++ b/lib/wx/src/gen/wxComboBox.erl
@@ -130,7 +130,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id, Options)
 	This::wxComboBox(), Parent::wxWindow:wxWindow(), Id::integer(), Value::unicode:chardata(), Pos::{X::integer(), Y::integer()}, Size::{W::integer(), H::integer()}, Choices::[unicode:chardata()].
 
 create(This,Parent,Id,Value,Pos={PosX,PosY},Size={SizeW,SizeH},Choices)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Value),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Value),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices) ->
   create(This,Parent,Id,Value,Pos,Size,Choices, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxcombobox.html#wxcomboboxcreate">external documentation</a>.
@@ -139,7 +139,7 @@ create(This,Parent,Id,Value,Pos={PosX,PosY},Size={SizeW,SizeH},Choices)
 	Option :: {'style', integer()}
 		 | {'validator', wx:wx_object()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Value,{PosX,PosY},{SizeW,SizeH},Choices, Options)
- when is_integer(Id),is_list(Value),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Value),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices),is_list(Options) ->
   ?CLASS(ThisT,wxComboBox),
   ?CLASS(ParentT,wxWindow),
   Value_UC = unicode:characters_to_binary([Value,0]),
@@ -252,7 +252,7 @@ redo(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec replace(This, From, To, Value) -> 'ok' when
 	This::wxComboBox(), From::integer(), To::integer(), Value::unicode:chardata().
 replace(#wx_ref{type=ThisT,ref=ThisRef},From,To,Value)
- when is_integer(From),is_integer(To),is_list(Value) ->
+ when is_integer(From),is_integer(To),?is_chardata(Value) ->
   ?CLASS(ThisT,wxComboBox),
   Value_UC = unicode:characters_to_binary([Value,0]),
   wxe_util:cast(?wxComboBox_Replace,
@@ -306,7 +306,7 @@ setSelection(#wx_ref{type=ThisT,ref=ThisRef},From,To)
 -spec setValue(This, Value) -> 'ok' when
 	This::wxComboBox(), Value::unicode:chardata().
 setValue(#wx_ref{type=ThisT,ref=ThisRef},Value)
- when is_list(Value) ->
+ when ?is_chardata(Value) ->
   ?CLASS(ThisT,wxComboBox),
   Value_UC = unicode:characters_to_binary([Value,0]),
   wxe_util:cast(?wxComboBox_SetValue,
diff --git a/lib/wx/src/gen/wxCommandEvent.erl b/lib/wx/src/gen/wxCommandEvent.erl
index 781482aebb..18ccbc65f0 100644
--- a/lib/wx/src/gen/wxCommandEvent.erl
+++ b/lib/wx/src/gen/wxCommandEvent.erl
@@ -114,7 +114,7 @@ setInt(#wx_ref{type=ThisT,ref=ThisRef},I)
 -spec setString(This, S) -> 'ok' when
 	This::wxCommandEvent(), S::unicode:chardata().
 setString(#wx_ref{type=ThisT,ref=ThisRef},S)
- when is_list(S) ->
+ when ?is_chardata(S) ->
   ?CLASS(ThisT,wxCommandEvent),
   S_UC = unicode:characters_to_binary([S,0]),
   wxe_util:cast(?wxCommandEvent_SetString,
diff --git a/lib/wx/src/gen/wxControl.erl b/lib/wx/src/gen/wxControl.erl
index f0a0fd02f7..df911b0758 100644
--- a/lib/wx/src/gen/wxControl.erl
+++ b/lib/wx/src/gen/wxControl.erl
@@ -89,7 +89,7 @@ getLabel(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setLabel(This, Label) -> 'ok' when
 	This::wxControl(), Label::unicode:chardata().
 setLabel(#wx_ref{type=ThisT,ref=ThisRef},Label)
- when is_list(Label) ->
+ when ?is_chardata(Label) ->
   ?CLASS(ThisT,wxControl),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:cast(?wxControl_SetLabel,
diff --git a/lib/wx/src/gen/wxControlWithItems.erl b/lib/wx/src/gen/wxControlWithItems.erl
index cf6b1fb17e..9c9769b5e3 100644
--- a/lib/wx/src/gen/wxControlWithItems.erl
+++ b/lib/wx/src/gen/wxControlWithItems.erl
@@ -86,7 +86,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 -spec append(This, Item) -> integer() when
 	This::wxControlWithItems(), Item::unicode:chardata().
 append(#wx_ref{type=ThisT,ref=ThisRef},Item)
- when is_list(Item) ->
+ when ?is_chardata(Item) ->
   ?CLASS(ThisT,wxControlWithItems),
   Item_UC = unicode:characters_to_binary([Item,0]),
   wxe_util:call(?wxControlWithItems_Append_1,
@@ -96,7 +96,7 @@ append(#wx_ref{type=ThisT,ref=ThisRef},Item)
 -spec append(This, Item, ClientData) -> integer() when
 	This::wxControlWithItems(), Item::unicode:chardata(), ClientData::term().
 append(#wx_ref{type=ThisT,ref=ThisRef},Item,ClientData)
- when is_list(Item) ->
+ when ?is_chardata(Item) ->
   ?CLASS(ThisT,wxControlWithItems),
   Item_UC = unicode:characters_to_binary([Item,0]),
   wxe_util:send_bin(term_to_binary(ClientData)),
@@ -136,7 +136,7 @@ delete(#wx_ref{type=ThisT,ref=ThisRef},N)
 	This::wxControlWithItems(), S::unicode:chardata().
 
 findString(This,S)
- when is_record(This, wx_ref),is_list(S) ->
+ when is_record(This, wx_ref),?is_chardata(S) ->
   findString(This,S, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxcontrolwithitems.html#wxcontrolwithitemsfindstring">external documentation</a>.
@@ -144,7 +144,7 @@ findString(This,S)
 	This::wxControlWithItems(), S::unicode:chardata(),
 	Option :: {'bCase', boolean()}.
 findString(#wx_ref{type=ThisT,ref=ThisRef},S, Options)
- when is_list(S),is_list(Options) ->
+ when ?is_chardata(S),is_list(Options) ->
   ?CLASS(ThisT,wxControlWithItems),
   S_UC = unicode:characters_to_binary([S,0]),
   MOpts = fun({bCase, BCase}, Acc) -> [<<1:32/?UI,(wxe_util:from_bool(BCase)):32/?UI>>|Acc];
@@ -209,7 +209,7 @@ getStringSelection(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec insert(This, Item, Pos) -> integer() when
 	This::wxControlWithItems(), Item::unicode:chardata(), Pos::integer().
 insert(#wx_ref{type=ThisT,ref=ThisRef},Item,Pos)
- when is_list(Item),is_integer(Pos) ->
+ when ?is_chardata(Item),is_integer(Pos) ->
   ?CLASS(ThisT,wxControlWithItems),
   Item_UC = unicode:characters_to_binary([Item,0]),
   wxe_util:call(?wxControlWithItems_Insert_2,
@@ -219,7 +219,7 @@ insert(#wx_ref{type=ThisT,ref=ThisRef},Item,Pos)
 -spec insert(This, Item, Pos, ClientData) -> integer() when
 	This::wxControlWithItems(), Item::unicode:chardata(), Pos::integer(), ClientData::term().
 insert(#wx_ref{type=ThisT,ref=ThisRef},Item,Pos,ClientData)
- when is_list(Item),is_integer(Pos) ->
+ when ?is_chardata(Item),is_integer(Pos) ->
   ?CLASS(ThisT,wxControlWithItems),
   Item_UC = unicode:characters_to_binary([Item,0]),
   wxe_util:send_bin(term_to_binary(ClientData)),
@@ -256,7 +256,7 @@ setSelection(#wx_ref{type=ThisT,ref=ThisRef},N)
 -spec setString(This, N, S) -> 'ok' when
 	This::wxControlWithItems(), N::integer(), S::unicode:chardata().
 setString(#wx_ref{type=ThisT,ref=ThisRef},N,S)
- when is_integer(N),is_list(S) ->
+ when is_integer(N),?is_chardata(S) ->
   ?CLASS(ThisT,wxControlWithItems),
   S_UC = unicode:characters_to_binary([S,0]),
   wxe_util:cast(?wxControlWithItems_SetString,
@@ -266,7 +266,7 @@ setString(#wx_ref{type=ThisT,ref=ThisRef},N,S)
 -spec setStringSelection(This, S) -> boolean() when
 	This::wxControlWithItems(), S::unicode:chardata().
 setStringSelection(#wx_ref{type=ThisT,ref=ThisRef},S)
- when is_list(S) ->
+ when ?is_chardata(S) ->
   ?CLASS(ThisT,wxControlWithItems),
   S_UC = unicode:characters_to_binary([S,0]),
   wxe_util:call(?wxControlWithItems_SetStringSelection,
diff --git a/lib/wx/src/gen/wxDC.erl b/lib/wx/src/gen/wxDC.erl
index ad7a4251ec..16bfcc3463 100644
--- a/lib/wx/src/gen/wxDC.erl
+++ b/lib/wx/src/gen/wxDC.erl
@@ -253,7 +253,7 @@ drawIcon(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=IconT,ref=IconRef},{PtX,Pt
 	This::wxDC(), Text::unicode:chardata(), Rect::{X::integer(), Y::integer(), W::integer(), H::integer()}.
 
 drawLabel(This,Text,Rect={RectX,RectY,RectW,RectH})
- when is_record(This, wx_ref),is_list(Text),is_integer(RectX),is_integer(RectY),is_integer(RectW),is_integer(RectH) ->
+ when is_record(This, wx_ref),?is_chardata(Text),is_integer(RectX),is_integer(RectY),is_integer(RectW),is_integer(RectH) ->
   drawLabel(This,Text,Rect, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdc.html#wxdcdrawlabel">external documentation</a>.
@@ -262,7 +262,7 @@ drawLabel(This,Text,Rect={RectX,RectY,RectW,RectH})
 	Option :: {'alignment', integer()}
 		 | {'indexAccel', integer()}.
 drawLabel(#wx_ref{type=ThisT,ref=ThisRef},Text,{RectX,RectY,RectW,RectH}, Options)
- when is_list(Text),is_integer(RectX),is_integer(RectY),is_integer(RectW),is_integer(RectH),is_list(Options) ->
+ when ?is_chardata(Text),is_integer(RectX),is_integer(RectY),is_integer(RectW),is_integer(RectH),is_list(Options) ->
   ?CLASS(ThisT,wxDC),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({alignment, Alignment}, Acc) -> [<<1:32/?UI,Alignment:32/?UI>>|Acc];
@@ -363,7 +363,7 @@ drawRectangle(#wx_ref{type=ThisT,ref=ThisRef},{PtX,PtY},{SzW,SzH})
 -spec drawRotatedText(This, Text, Pt, Angle) -> 'ok' when
 	This::wxDC(), Text::unicode:chardata(), Pt::{X::integer(), Y::integer()}, Angle::number().
 drawRotatedText(#wx_ref{type=ThisT,ref=ThisRef},Text,{PtX,PtY},Angle)
- when is_list(Text),is_integer(PtX),is_integer(PtY),is_number(Angle) ->
+ when ?is_chardata(Text),is_integer(PtX),is_integer(PtY),is_number(Angle) ->
   ?CLASS(ThisT,wxDC),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxDC_DrawRotatedText,
@@ -391,7 +391,7 @@ drawRoundedRectangle(#wx_ref{type=ThisT,ref=ThisRef},{PtX,PtY},{SzW,SzH},Radius)
 -spec drawText(This, Text, Pt) -> 'ok' when
 	This::wxDC(), Text::unicode:chardata(), Pt::{X::integer(), Y::integer()}.
 drawText(#wx_ref{type=ThisT,ref=ThisRef},Text,{PtX,PtY})
- when is_list(Text),is_integer(PtX),is_integer(PtY) ->
+ when ?is_chardata(Text),is_integer(PtX),is_integer(PtY) ->
   ?CLASS(ThisT,wxDC),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxDC_DrawText,
@@ -521,7 +521,7 @@ getMapMode(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec getMultiLineTextExtent(This, String) -> {W::integer(), H::integer()} when
 	This::wxDC(), String::unicode:chardata().
 getMultiLineTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String)
- when is_list(String) ->
+ when ?is_chardata(String) ->
   ?CLASS(ThisT,wxDC),
   String_UC = unicode:characters_to_binary([String,0]),
   wxe_util:call(?wxDC_GetMultiLineTextExtent_1,
@@ -532,7 +532,7 @@ getMultiLineTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String)
 	This::wxDC(), String::unicode:chardata(),
 	Option :: {'font', wxFont:wxFont()}.
 getMultiLineTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String, Options)
- when is_list(String),is_list(Options) ->
+ when ?is_chardata(String),is_list(Options) ->
   ?CLASS(ThisT,wxDC),
   String_UC = unicode:characters_to_binary([String,0]),
   MOpts = fun({font, #wx_ref{type=FontT,ref=FontRef}}, Acc) ->   ?CLASS(FontT,wxFont),[<<1:32/?UI,FontRef:32/?UI>>|Acc];
@@ -546,7 +546,7 @@ getMultiLineTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String, Options)
 	Result ::{Res ::boolean(), Widths::[integer()]},
 	This::wxDC(), Text::unicode:chardata().
 getPartialTextExtents(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxDC),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxDC_GetPartialTextExtents,
@@ -606,7 +606,7 @@ getTextBackground(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec getTextExtent(This, String) -> {W::integer(), H::integer()} when
 	This::wxDC(), String::unicode:chardata().
 getTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String)
- when is_list(String) ->
+ when ?is_chardata(String) ->
   ?CLASS(ThisT,wxDC),
   String_UC = unicode:characters_to_binary([String,0]),
   wxe_util:call(?wxDC_GetTextExtent_1,
@@ -618,7 +618,7 @@ getTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String)
 	This::wxDC(), String::unicode:chardata(),
 	Option :: {'theFont', wxFont:wxFont()}.
 getTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String, Options)
- when is_list(String),is_list(Options) ->
+ when ?is_chardata(String),is_list(Options) ->
   ?CLASS(ThisT,wxDC),
   String_UC = unicode:characters_to_binary([String,0]),
   MOpts = fun({theFont, #wx_ref{type=TheFontT,ref=TheFontRef}}, Acc) ->   ?CLASS(TheFontT,wxFont),[<<1:32/?UI,TheFontRef:32/?UI>>|Acc];
@@ -929,7 +929,7 @@ setUserScale(#wx_ref{type=ThisT,ref=ThisRef},X,Y)
 -spec startDoc(This, Message) -> boolean() when
 	This::wxDC(), Message::unicode:chardata().
 startDoc(#wx_ref{type=ThisT,ref=ThisRef},Message)
- when is_list(Message) ->
+ when ?is_chardata(Message) ->
   ?CLASS(ThisT,wxDC),
   Message_UC = unicode:characters_to_binary([Message,0]),
   wxe_util:call(?wxDC_StartDoc,
diff --git a/lib/wx/src/gen/wxDialog.erl b/lib/wx/src/gen/wxDialog.erl
index 6ddf15b193..178efde5c6 100644
--- a/lib/wx/src/gen/wxDialog.erl
+++ b/lib/wx/src/gen/wxDialog.erl
@@ -97,7 +97,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 new(Parent,Id,Title)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   new(Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdialog.html#wxdialogwxdialog">external documentation</a>.
@@ -107,7 +107,7 @@ new(Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -123,7 +123,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
 	This::wxDialog(), Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 create(This,Parent,Id,Title)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   create(This,Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxdialog.html#wxdialogcreate">external documentation</a>.
@@ -133,7 +133,7 @@ create(This,Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ThisT,wxDialog),
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
diff --git a/lib/wx/src/gen/wxDirDialog.erl b/lib/wx/src/gen/wxDirDialog.erl
index 638d7663af..c942116fd9 100644
--- a/lib/wx/src/gen/wxDirDialog.erl
+++ b/lib/wx/src/gen/wxDirDialog.erl
@@ -137,7 +137,7 @@ getMessage(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setMessage(This, Message) -> 'ok' when
 	This::wxDirDialog(), Message::unicode:chardata().
 setMessage(#wx_ref{type=ThisT,ref=ThisRef},Message)
- when is_list(Message) ->
+ when ?is_chardata(Message) ->
   ?CLASS(ThisT,wxDirDialog),
   Message_UC = unicode:characters_to_binary([Message,0]),
   wxe_util:cast(?wxDirDialog_SetMessage,
@@ -147,7 +147,7 @@ setMessage(#wx_ref{type=ThisT,ref=ThisRef},Message)
 -spec setPath(This, Path) -> 'ok' when
 	This::wxDirDialog(), Path::unicode:chardata().
 setPath(#wx_ref{type=ThisT,ref=ThisRef},Path)
- when is_list(Path) ->
+ when ?is_chardata(Path) ->
   ?CLASS(ThisT,wxDirDialog),
   Path_UC = unicode:characters_to_binary([Path,0]),
   wxe_util:cast(?wxDirDialog_SetPath,
diff --git a/lib/wx/src/gen/wxDirPickerCtrl.erl b/lib/wx/src/gen/wxDirPickerCtrl.erl
index 28f1d02cf8..014e90c120 100644
--- a/lib/wx/src/gen/wxDirPickerCtrl.erl
+++ b/lib/wx/src/gen/wxDirPickerCtrl.erl
@@ -167,7 +167,7 @@ getPath(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setPath(This, Str) -> 'ok' when
 	This::wxDirPickerCtrl(), Str::unicode:chardata().
 setPath(#wx_ref{type=ThisT,ref=ThisRef},Str)
- when is_list(Str) ->
+ when ?is_chardata(Str) ->
   ?CLASS(ThisT,wxDirPickerCtrl),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxDirPickerCtrl_SetPath,
diff --git a/lib/wx/src/gen/wxFileDataObject.erl b/lib/wx/src/gen/wxFileDataObject.erl
index 06d8ceb9cd..d4e9198225 100644
--- a/lib/wx/src/gen/wxFileDataObject.erl
+++ b/lib/wx/src/gen/wxFileDataObject.erl
@@ -49,7 +49,7 @@ new() ->
 -spec addFile(This, Filename) -> 'ok' when
 	This::wxFileDataObject(), Filename::unicode:chardata().
 addFile(#wx_ref{type=ThisT,ref=ThisRef},Filename)
- when is_list(Filename) ->
+ when ?is_chardata(Filename) ->
   ?CLASS(ThisT,wxFileDataObject),
   Filename_UC = unicode:characters_to_binary([Filename,0]),
   wxe_util:cast(?wxFileDataObject_AddFile,
diff --git a/lib/wx/src/gen/wxFileDialog.erl b/lib/wx/src/gen/wxFileDialog.erl
index d0dac566a3..de5d436c11 100644
--- a/lib/wx/src/gen/wxFileDialog.erl
+++ b/lib/wx/src/gen/wxFileDialog.erl
@@ -191,7 +191,7 @@ getWildcard(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setDirectory(This, Dir) -> 'ok' when
 	This::wxFileDialog(), Dir::unicode:chardata().
 setDirectory(#wx_ref{type=ThisT,ref=ThisRef},Dir)
- when is_list(Dir) ->
+ when ?is_chardata(Dir) ->
   ?CLASS(ThisT,wxFileDialog),
   Dir_UC = unicode:characters_to_binary([Dir,0]),
   wxe_util:cast(?wxFileDialog_SetDirectory,
@@ -201,7 +201,7 @@ setDirectory(#wx_ref{type=ThisT,ref=ThisRef},Dir)
 -spec setFilename(This, Name) -> 'ok' when
 	This::wxFileDialog(), Name::unicode:chardata().
 setFilename(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxFileDialog),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:cast(?wxFileDialog_SetFilename,
@@ -220,7 +220,7 @@ setFilterIndex(#wx_ref{type=ThisT,ref=ThisRef},FilterIndex)
 -spec setMessage(This, Message) -> 'ok' when
 	This::wxFileDialog(), Message::unicode:chardata().
 setMessage(#wx_ref{type=ThisT,ref=ThisRef},Message)
- when is_list(Message) ->
+ when ?is_chardata(Message) ->
   ?CLASS(ThisT,wxFileDialog),
   Message_UC = unicode:characters_to_binary([Message,0]),
   wxe_util:cast(?wxFileDialog_SetMessage,
@@ -230,7 +230,7 @@ setMessage(#wx_ref{type=ThisT,ref=ThisRef},Message)
 -spec setPath(This, Path) -> 'ok' when
 	This::wxFileDialog(), Path::unicode:chardata().
 setPath(#wx_ref{type=ThisT,ref=ThisRef},Path)
- when is_list(Path) ->
+ when ?is_chardata(Path) ->
   ?CLASS(ThisT,wxFileDialog),
   Path_UC = unicode:characters_to_binary([Path,0]),
   wxe_util:cast(?wxFileDialog_SetPath,
@@ -240,7 +240,7 @@ setPath(#wx_ref{type=ThisT,ref=ThisRef},Path)
 -spec setWildcard(This, WildCard) -> 'ok' when
 	This::wxFileDialog(), WildCard::unicode:chardata().
 setWildcard(#wx_ref{type=ThisT,ref=ThisRef},WildCard)
- when is_list(WildCard) ->
+ when ?is_chardata(WildCard) ->
   ?CLASS(ThisT,wxFileDialog),
   WildCard_UC = unicode:characters_to_binary([WildCard,0]),
   wxe_util:cast(?wxFileDialog_SetWildcard,
diff --git a/lib/wx/src/gen/wxFilePickerCtrl.erl b/lib/wx/src/gen/wxFilePickerCtrl.erl
index 6d9ae85049..24941ad87a 100644
--- a/lib/wx/src/gen/wxFilePickerCtrl.erl
+++ b/lib/wx/src/gen/wxFilePickerCtrl.erl
@@ -171,7 +171,7 @@ getPath(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setPath(This, Str) -> 'ok' when
 	This::wxFilePickerCtrl(), Str::unicode:chardata().
 setPath(#wx_ref{type=ThisT,ref=ThisRef},Str)
- when is_list(Str) ->
+ when ?is_chardata(Str) ->
   ?CLASS(ThisT,wxFilePickerCtrl),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxFilePickerCtrl_SetPath,
diff --git a/lib/wx/src/gen/wxFindReplaceData.erl b/lib/wx/src/gen/wxFindReplaceData.erl
index 9b4b910f7e..388bf5f238 100644
--- a/lib/wx/src/gen/wxFindReplaceData.erl
+++ b/lib/wx/src/gen/wxFindReplaceData.erl
@@ -87,7 +87,7 @@ setFlags(#wx_ref{type=ThisT,ref=ThisRef},Flags)
 -spec setFindString(This, Str) -> 'ok' when
 	This::wxFindReplaceData(), Str::unicode:chardata().
 setFindString(#wx_ref{type=ThisT,ref=ThisRef},Str)
- when is_list(Str) ->
+ when ?is_chardata(Str) ->
   ?CLASS(ThisT,wxFindReplaceData),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxFindReplaceData_SetFindString,
@@ -97,7 +97,7 @@ setFindString(#wx_ref{type=ThisT,ref=ThisRef},Str)
 -spec setReplaceString(This, Str) -> 'ok' when
 	This::wxFindReplaceData(), Str::unicode:chardata().
 setReplaceString(#wx_ref{type=ThisT,ref=ThisRef},Str)
- when is_list(Str) ->
+ when ?is_chardata(Str) ->
   ?CLASS(ThisT,wxFindReplaceData),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxFindReplaceData_SetReplaceString,
diff --git a/lib/wx/src/gen/wxFindReplaceDialog.erl b/lib/wx/src/gen/wxFindReplaceDialog.erl
index 6cc4943f8d..b5cd3350d2 100644
--- a/lib/wx/src/gen/wxFindReplaceDialog.erl
+++ b/lib/wx/src/gen/wxFindReplaceDialog.erl
@@ -99,7 +99,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Data::wxFindReplaceData:wxFindReplaceData(), Title::unicode:chardata().
 
 new(Parent,Data,Title)
- when is_record(Parent, wx_ref),is_record(Data, wx_ref),is_list(Title) ->
+ when is_record(Parent, wx_ref),is_record(Data, wx_ref),?is_chardata(Title) ->
   new(Parent,Data,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxfindreplacedialog.html#wxfindreplacedialogwxfindreplacedialog">external documentation</a>.
@@ -107,7 +107,7 @@ new(Parent,Data,Title)
 	Parent::wxWindow:wxWindow(), Data::wxFindReplaceData:wxFindReplaceData(), Title::unicode:chardata(),
 	Option :: {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},#wx_ref{type=DataT,ref=DataRef},Title, Options)
- when is_list(Title),is_list(Options) ->
+ when ?is_chardata(Title),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   ?CLASS(DataT,wxFindReplaceData),
   Title_UC = unicode:characters_to_binary([Title,0]),
@@ -122,7 +122,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},#wx_ref{type=DataT,ref=DataRef},Title, O
 	This::wxFindReplaceDialog(), Parent::wxWindow:wxWindow(), Data::wxFindReplaceData:wxFindReplaceData(), Title::unicode:chardata().
 
 create(This,Parent,Data,Title)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_record(Data, wx_ref),is_list(Title) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_record(Data, wx_ref),?is_chardata(Title) ->
   create(This,Parent,Data,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxfindreplacedialog.html#wxfindreplacedialogcreate">external documentation</a>.
@@ -130,7 +130,7 @@ create(This,Parent,Data,Title)
 	This::wxFindReplaceDialog(), Parent::wxWindow:wxWindow(), Data::wxFindReplaceData:wxFindReplaceData(), Title::unicode:chardata(),
 	Option :: {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},#wx_ref{type=DataT,ref=DataRef},Title, Options)
- when is_list(Title),is_list(Options) ->
+ when ?is_chardata(Title),is_list(Options) ->
   ?CLASS(ThisT,wxFindReplaceDialog),
   ?CLASS(ParentT,wxWindow),
   ?CLASS(DataT,wxFindReplaceData),
diff --git a/lib/wx/src/gen/wxFont.erl b/lib/wx/src/gen/wxFont.erl
index 56e6e96b6d..fb0ba8b505 100644
--- a/lib/wx/src/gen/wxFont.erl
+++ b/lib/wx/src/gen/wxFont.erl
@@ -49,7 +49,7 @@ new() ->
 -spec new(Fontname) -> wxFont() when
 	Fontname::unicode:chardata().
 new(Fontname)
- when is_list(Fontname) ->
+ when ?is_chardata(Fontname) ->
   Fontname_UC = unicode:characters_to_binary([Fontname,0]),
   wxe_util:construct(?wxFont_new_1,
   <<(byte_size(Fontname_UC)):32/?UI,(Fontname_UC)/binary, 0:(((8- ((4+byte_size(Fontname_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -183,7 +183,7 @@ setDefaultEncoding(Encoding)
 -spec setFaceName(This, FaceName) -> boolean() when
 	This::wxFont(), FaceName::unicode:chardata().
 setFaceName(#wx_ref{type=ThisT,ref=ThisRef},FaceName)
- when is_list(FaceName) ->
+ when ?is_chardata(FaceName) ->
   ?CLASS(ThisT,wxFont),
   FaceName_UC = unicode:characters_to_binary([FaceName,0]),
   wxe_util:call(?wxFont_SetFaceName,
diff --git a/lib/wx/src/gen/wxFrame.erl b/lib/wx/src/gen/wxFrame.erl
index a5529e0612..3e33f650d1 100644
--- a/lib/wx/src/gen/wxFrame.erl
+++ b/lib/wx/src/gen/wxFrame.erl
@@ -99,7 +99,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 new(Parent,Id,Title)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   new(Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxframe.html#wxframewxframe">external documentation</a>.
@@ -109,7 +109,7 @@ new(Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -125,7 +125,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
 	This::wxFrame(), Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 create(This,Parent,Id,Title)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   create(This,Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxframe.html#wxframecreate">external documentation</a>.
@@ -135,7 +135,7 @@ create(This,Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ThisT,wxFrame),
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
@@ -284,7 +284,7 @@ setStatusBarPane(#wx_ref{type=ThisT,ref=ThisRef},N)
 	This::wxFrame(), Text::unicode:chardata().
 
 setStatusText(This,Text)
- when is_record(This, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),?is_chardata(Text) ->
   setStatusText(This,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxframe.html#wxframesetstatustext">external documentation</a>.
@@ -292,7 +292,7 @@ setStatusText(This,Text)
 	This::wxFrame(), Text::unicode:chardata(),
 	Option :: {'number', integer()}.
 setStatusText(#wx_ref{type=ThisT,ref=ThisRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxFrame),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({number, Number}, Acc) -> [<<1:32/?UI,Number:32/?UI>>|Acc];
diff --git a/lib/wx/src/gen/wxGenericDirCtrl.erl b/lib/wx/src/gen/wxGenericDirCtrl.erl
index d9815a51ba..3c13e09359 100644
--- a/lib/wx/src/gen/wxGenericDirCtrl.erl
+++ b/lib/wx/src/gen/wxGenericDirCtrl.erl
@@ -175,7 +175,7 @@ collapseTree(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec expandPath(This, Path) -> boolean() when
 	This::wxGenericDirCtrl(), Path::unicode:chardata().
 expandPath(#wx_ref{type=ThisT,ref=ThisRef},Path)
- when is_list(Path) ->
+ when ?is_chardata(Path) ->
   ?CLASS(ThisT,wxGenericDirCtrl),
   Path_UC = unicode:characters_to_binary([Path,0]),
   wxe_util:call(?wxGenericDirCtrl_ExpandPath,
@@ -249,7 +249,7 @@ reCreateTree(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setDefaultPath(This, Path) -> 'ok' when
 	This::wxGenericDirCtrl(), Path::unicode:chardata().
 setDefaultPath(#wx_ref{type=ThisT,ref=ThisRef},Path)
- when is_list(Path) ->
+ when ?is_chardata(Path) ->
   ?CLASS(ThisT,wxGenericDirCtrl),
   Path_UC = unicode:characters_to_binary([Path,0]),
   wxe_util:cast(?wxGenericDirCtrl_SetDefaultPath,
@@ -259,7 +259,7 @@ setDefaultPath(#wx_ref{type=ThisT,ref=ThisRef},Path)
 -spec setFilter(This, Filter) -> 'ok' when
 	This::wxGenericDirCtrl(), Filter::unicode:chardata().
 setFilter(#wx_ref{type=ThisT,ref=ThisRef},Filter)
- when is_list(Filter) ->
+ when ?is_chardata(Filter) ->
   ?CLASS(ThisT,wxGenericDirCtrl),
   Filter_UC = unicode:characters_to_binary([Filter,0]),
   wxe_util:cast(?wxGenericDirCtrl_SetFilter,
@@ -278,7 +278,7 @@ setFilterIndex(#wx_ref{type=ThisT,ref=ThisRef},N)
 -spec setPath(This, Path) -> 'ok' when
 	This::wxGenericDirCtrl(), Path::unicode:chardata().
 setPath(#wx_ref{type=ThisT,ref=ThisRef},Path)
- when is_list(Path) ->
+ when ?is_chardata(Path) ->
   ?CLASS(ThisT,wxGenericDirCtrl),
   Path_UC = unicode:characters_to_binary([Path,0]),
   wxe_util:cast(?wxGenericDirCtrl_SetPath,
diff --git a/lib/wx/src/gen/wxGraphicsContext.erl b/lib/wx/src/gen/wxGraphicsContext.erl
index 0aa2119210..2d0271ac48 100644
--- a/lib/wx/src/gen/wxGraphicsContext.erl
+++ b/lib/wx/src/gen/wxGraphicsContext.erl
@@ -287,7 +287,7 @@ drawRoundedRectangle(#wx_ref{type=ThisT,ref=ThisRef},X,Y,W,H,Radius)
 -spec drawText(This, Str, X, Y) -> 'ok' when
 	This::wxGraphicsContext(), Str::unicode:chardata(), X::number(), Y::number().
 drawText(#wx_ref{type=ThisT,ref=ThisRef},Str,X,Y)
- when is_list(Str),is_number(X),is_number(Y) ->
+ when ?is_chardata(Str),is_number(X),is_number(Y) ->
   ?CLASS(ThisT,wxGraphicsContext),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxGraphicsContext_DrawText_3,
@@ -303,13 +303,13 @@ drawText(#wx_ref{type=ThisT,ref=ThisRef},Str,X,Y)
       (This, Str, X, Y, BackgroundBrush) -> 'ok' when
 	This::wxGraphicsContext(), Str::unicode:chardata(), X::number(), Y::number(), BackgroundBrush::wxGraphicsBrush:wxGraphicsBrush().
 drawText(#wx_ref{type=ThisT,ref=ThisRef},Str,X,Y,Angle)
- when is_list(Str),is_number(X),is_number(Y),is_number(Angle) ->
+ when ?is_chardata(Str),is_number(X),is_number(Y),is_number(Angle) ->
   ?CLASS(ThisT,wxGraphicsContext),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxGraphicsContext_DrawText_4_0,
   <<ThisRef:32/?UI,(byte_size(Str_UC)):32/?UI,(Str_UC)/binary, 0:(((8- ((0+byte_size(Str_UC)) band 16#7)) band 16#7))/unit:8,X:64/?F,Y:64/?F,Angle:64/?F>>);
 drawText(#wx_ref{type=ThisT,ref=ThisRef},Str,X,Y,#wx_ref{type=BackgroundBrushT,ref=BackgroundBrushRef})
- when is_list(Str),is_number(X),is_number(Y) ->
+ when ?is_chardata(Str),is_number(X),is_number(Y) ->
   ?CLASS(ThisT,wxGraphicsContext),
   Str_UC = unicode:characters_to_binary([Str,0]),
   ?CLASS(BackgroundBrushT,wxGraphicsBrush),
@@ -320,7 +320,7 @@ drawText(#wx_ref{type=ThisT,ref=ThisRef},Str,X,Y,#wx_ref{type=BackgroundBrushT,r
 -spec drawText(This, Str, X, Y, Angle, BackgroundBrush) -> 'ok' when
 	This::wxGraphicsContext(), Str::unicode:chardata(), X::number(), Y::number(), Angle::number(), BackgroundBrush::wxGraphicsBrush:wxGraphicsBrush().
 drawText(#wx_ref{type=ThisT,ref=ThisRef},Str,X,Y,Angle,#wx_ref{type=BackgroundBrushT,ref=BackgroundBrushRef})
- when is_list(Str),is_number(X),is_number(Y),is_number(Angle) ->
+ when ?is_chardata(Str),is_number(X),is_number(Y),is_number(Angle) ->
   ?CLASS(ThisT,wxGraphicsContext),
   Str_UC = unicode:characters_to_binary([Str,0]),
   ?CLASS(BackgroundBrushT,wxGraphicsBrush),
@@ -363,7 +363,7 @@ strokePath(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PathT,ref=PathRef}) ->
 -spec getPartialTextExtents(This, Text) -> [number()] when
 	This::wxGraphicsContext(), Text::unicode:chardata().
 getPartialTextExtents(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxGraphicsContext),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxGraphicsContext_GetPartialTextExtents,
@@ -374,7 +374,7 @@ getPartialTextExtents(#wx_ref{type=ThisT,ref=ThisRef},Text)
 	Result ::{Width::number(), Height::number(), Descent::number(), ExternalLeading::number()},
 	This::wxGraphicsContext(), Text::unicode:chardata().
 getTextExtent(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxGraphicsContext),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxGraphicsContext_GetTextExtent,
diff --git a/lib/wx/src/gen/wxGrid.erl b/lib/wx/src/gen/wxGrid.erl
index c929174421..0cdb37e9e4 100644
--- a/lib/wx/src/gen/wxGrid.erl
+++ b/lib/wx/src/gen/wxGrid.erl
@@ -851,7 +851,7 @@ getDefaultEditorForCell(#wx_ref{type=ThisT,ref=ThisRef},Row,Col)
 -spec getDefaultEditorForType(This, TypeName) -> wxGridCellEditor:wxGridCellEditor() when
 	This::wxGrid(), TypeName::unicode:chardata().
 getDefaultEditorForType(#wx_ref{type=ThisT,ref=ThisRef},TypeName)
- when is_list(TypeName) ->
+ when ?is_chardata(TypeName) ->
   ?CLASS(ThisT,wxGrid),
   TypeName_UC = unicode:characters_to_binary([TypeName,0]),
   wxe_util:call(?wxGrid_GetDefaultEditorForType,
@@ -878,7 +878,7 @@ getDefaultRendererForCell(#wx_ref{type=ThisT,ref=ThisRef},Row,Col)
 -spec getDefaultRendererForType(This, TypeName) -> wxGridCellRenderer:wxGridCellRenderer() when
 	This::wxGrid(), TypeName::unicode:chardata().
 getDefaultRendererForType(#wx_ref{type=ThisT,ref=ThisRef},TypeName)
- when is_list(TypeName) ->
+ when ?is_chardata(TypeName) ->
   ?CLASS(ThisT,wxGrid),
   TypeName_UC = unicode:characters_to_binary([TypeName,0]),
   wxe_util:call(?wxGrid_GetDefaultRendererForType,
@@ -1407,7 +1407,7 @@ movePageUp(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec registerDataType(This, TypeName, Renderer, Editor) -> 'ok' when
 	This::wxGrid(), TypeName::unicode:chardata(), Renderer::wxGridCellRenderer:wxGridCellRenderer(), Editor::wxGridCellEditor:wxGridCellEditor().
 registerDataType(#wx_ref{type=ThisT,ref=ThisRef},TypeName,#wx_ref{type=RendererT,ref=RendererRef},#wx_ref{type=EditorT,ref=EditorRef})
- when is_list(TypeName) ->
+ when ?is_chardata(TypeName) ->
   ?CLASS(ThisT,wxGrid),
   TypeName_UC = unicode:characters_to_binary([TypeName,0]),
   ?CLASS(RendererT,wxGridCellRenderer),
@@ -1634,7 +1634,7 @@ setCellTextColour(#wx_ref{type=ThisT,ref=ThisRef},Val,Row,Col)
 -spec setCellValue(This, Coords, S) -> 'ok' when
 	This::wxGrid(), Coords::{R::integer(), C::integer()}, S::unicode:chardata().
 setCellValue(#wx_ref{type=ThisT,ref=ThisRef},{CoordsR,CoordsC},S)
- when is_integer(CoordsR),is_integer(CoordsC),is_list(S) ->
+ when is_integer(CoordsR),is_integer(CoordsC),?is_chardata(S) ->
   ?CLASS(ThisT,wxGrid),
   S_UC = unicode:characters_to_binary([S,0]),
   wxe_util:cast(?wxGrid_SetCellValue_2,
@@ -1650,13 +1650,13 @@ setCellValue(#wx_ref{type=ThisT,ref=ThisRef},{CoordsR,CoordsC},S)
       (This, Val, Row, Col) -> 'ok' when
 	This::wxGrid(), Val::unicode:chardata(), Row::integer(), Col::integer().
 setCellValue(#wx_ref{type=ThisT,ref=ThisRef},Row,Col,S)
- when is_integer(Row),is_integer(Col),is_list(S) ->
+ when is_integer(Row),is_integer(Col),?is_chardata(S) ->
   ?CLASS(ThisT,wxGrid),
   S_UC = unicode:characters_to_binary([S,0]),
   wxe_util:cast(?wxGrid_SetCellValue_3_0,
   <<ThisRef:32/?UI,Row:32/?UI,Col:32/?UI,(byte_size(S_UC)):32/?UI,(S_UC)/binary, 0:(((8- ((0+byte_size(S_UC)) band 16#7)) band 16#7))/unit:8>>);
 setCellValue(#wx_ref{type=ThisT,ref=ThisRef},Val,Row,Col)
- when is_list(Val),is_integer(Row),is_integer(Col) ->
+ when ?is_chardata(Val),is_integer(Row),is_integer(Col) ->
   ?CLASS(ThisT,wxGrid),
   Val_UC = unicode:characters_to_binary([Val,0]),
   wxe_util:cast(?wxGrid_SetCellValue_3_1,
@@ -1717,7 +1717,7 @@ setColFormatFloat(#wx_ref{type=ThisT,ref=ThisRef},Col, Options)
 -spec setColFormatCustom(This, Col, TypeName) -> 'ok' when
 	This::wxGrid(), Col::integer(), TypeName::unicode:chardata().
 setColFormatCustom(#wx_ref{type=ThisT,ref=ThisRef},Col,TypeName)
- when is_integer(Col),is_list(TypeName) ->
+ when is_integer(Col),?is_chardata(TypeName) ->
   ?CLASS(ThisT,wxGrid),
   TypeName_UC = unicode:characters_to_binary([TypeName,0]),
   wxe_util:cast(?wxGrid_SetColFormatCustom,
@@ -1745,7 +1745,7 @@ setColLabelSize(#wx_ref{type=ThisT,ref=ThisRef},Height)
 -spec setColLabelValue(This, Col, Val) -> 'ok' when
 	This::wxGrid(), Col::integer(), Val::unicode:chardata().
 setColLabelValue(#wx_ref{type=ThisT,ref=ThisRef},Col,Val)
- when is_integer(Col),is_list(Val) ->
+ when is_integer(Col),?is_chardata(Val) ->
   ?CLASS(ThisT,wxGrid),
   Val_UC = unicode:characters_to_binary([Val,0]),
   wxe_util:cast(?wxGrid_SetColLabelValue,
@@ -1981,7 +1981,7 @@ setRowLabelSize(#wx_ref{type=ThisT,ref=ThisRef},Width)
 -spec setRowLabelValue(This, Row, Val) -> 'ok' when
 	This::wxGrid(), Row::integer(), Val::unicode:chardata().
 setRowLabelValue(#wx_ref{type=ThisT,ref=ThisRef},Row,Val)
- when is_integer(Row),is_list(Val) ->
+ when is_integer(Row),?is_chardata(Val) ->
   ?CLASS(ThisT,wxGrid),
   Val_UC = unicode:characters_to_binary([Val,0]),
   wxe_util:cast(?wxGrid_SetRowLabelValue,
diff --git a/lib/wx/src/gen/wxGridCellBoolEditor.erl b/lib/wx/src/gen/wxGridCellBoolEditor.erl
index 1d949d54ff..59348f94f8 100644
--- a/lib/wx/src/gen/wxGridCellBoolEditor.erl
+++ b/lib/wx/src/gen/wxGridCellBoolEditor.erl
@@ -52,7 +52,7 @@ new() ->
 -spec isTrueValue(Value) -> boolean() when
 	Value::unicode:chardata().
 isTrueValue(Value)
- when is_list(Value) ->
+ when ?is_chardata(Value) ->
   Value_UC = unicode:characters_to_binary([Value,0]),
   wxe_util:call(?wxGridCellBoolEditor_IsTrueValue,
   <<(byte_size(Value_UC)):32/?UI,(Value_UC)/binary, 0:(((8- ((4+byte_size(Value_UC)) band 16#7)) band 16#7))/unit:8>>).
diff --git a/lib/wx/src/gen/wxGridCellChoiceEditor.erl b/lib/wx/src/gen/wxGridCellChoiceEditor.erl
index d5487c3618..8f4a07a0bb 100644
--- a/lib/wx/src/gen/wxGridCellChoiceEditor.erl
+++ b/lib/wx/src/gen/wxGridCellChoiceEditor.erl
@@ -68,7 +68,7 @@ new(Choices, Options)
 -spec setParameters(This, Params) -> 'ok' when
 	This::wxGridCellChoiceEditor(), Params::unicode:chardata().
 setParameters(#wx_ref{type=ThisT,ref=ThisRef},Params)
- when is_list(Params) ->
+ when ?is_chardata(Params) ->
   ?CLASS(ThisT,wxGridCellChoiceEditor),
   Params_UC = unicode:characters_to_binary([Params,0]),
   wxe_util:cast(?wxGridCellChoiceEditor_SetParameters,
diff --git a/lib/wx/src/gen/wxGridCellFloatEditor.erl b/lib/wx/src/gen/wxGridCellFloatEditor.erl
index 6e85469ecf..90b9542afc 100644
--- a/lib/wx/src/gen/wxGridCellFloatEditor.erl
+++ b/lib/wx/src/gen/wxGridCellFloatEditor.erl
@@ -65,7 +65,7 @@ new(Options)
 -spec setParameters(This, Params) -> 'ok' when
 	This::wxGridCellFloatEditor(), Params::unicode:chardata().
 setParameters(#wx_ref{type=ThisT,ref=ThisRef},Params)
- when is_list(Params) ->
+ when ?is_chardata(Params) ->
   ?CLASS(ThisT,wxGridCellFloatEditor),
   Params_UC = unicode:characters_to_binary([Params,0]),
   wxe_util:cast(?wxGridCellFloatEditor_SetParameters,
diff --git a/lib/wx/src/gen/wxGridCellFloatRenderer.erl b/lib/wx/src/gen/wxGridCellFloatRenderer.erl
index ccb29902b3..72bdc6fc29 100644
--- a/lib/wx/src/gen/wxGridCellFloatRenderer.erl
+++ b/lib/wx/src/gen/wxGridCellFloatRenderer.erl
@@ -81,7 +81,7 @@ getWidth(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setParameters(This, Params) -> 'ok' when
 	This::wxGridCellFloatRenderer(), Params::unicode:chardata().
 setParameters(#wx_ref{type=ThisT,ref=ThisRef},Params)
- when is_list(Params) ->
+ when ?is_chardata(Params) ->
   ?CLASS(ThisT,wxGridCellFloatRenderer),
   Params_UC = unicode:characters_to_binary([Params,0]),
   wxe_util:cast(?wxGridCellFloatRenderer_SetParameters,
diff --git a/lib/wx/src/gen/wxGridCellNumberEditor.erl b/lib/wx/src/gen/wxGridCellNumberEditor.erl
index 7a47024b2f..22f9a1839c 100644
--- a/lib/wx/src/gen/wxGridCellNumberEditor.erl
+++ b/lib/wx/src/gen/wxGridCellNumberEditor.erl
@@ -75,7 +75,7 @@ getValue(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setParameters(This, Params) -> 'ok' when
 	This::wxGridCellNumberEditor(), Params::unicode:chardata().
 setParameters(#wx_ref{type=ThisT,ref=ThisRef},Params)
- when is_list(Params) ->
+ when ?is_chardata(Params) ->
   ?CLASS(ThisT,wxGridCellNumberEditor),
   Params_UC = unicode:characters_to_binary([Params,0]),
   wxe_util:cast(?wxGridCellNumberEditor_SetParameters,
diff --git a/lib/wx/src/gen/wxGridCellTextEditor.erl b/lib/wx/src/gen/wxGridCellTextEditor.erl
index 4ddb4a7028..39adda5d8b 100644
--- a/lib/wx/src/gen/wxGridCellTextEditor.erl
+++ b/lib/wx/src/gen/wxGridCellTextEditor.erl
@@ -52,7 +52,7 @@ new() ->
 -spec setParameters(This, Params) -> 'ok' when
 	This::wxGridCellTextEditor(), Params::unicode:chardata().
 setParameters(#wx_ref{type=ThisT,ref=ThisRef},Params)
- when is_list(Params) ->
+ when ?is_chardata(Params) ->
   ?CLASS(ThisT,wxGridCellTextEditor),
   Params_UC = unicode:characters_to_binary([Params,0]),
   wxe_util:cast(?wxGridCellTextEditor_SetParameters,
diff --git a/lib/wx/src/gen/wxHtmlEasyPrinting.erl b/lib/wx/src/gen/wxHtmlEasyPrinting.erl
index a2cf46ed8d..dfb9dcfa1c 100644
--- a/lib/wx/src/gen/wxHtmlEasyPrinting.erl
+++ b/lib/wx/src/gen/wxHtmlEasyPrinting.erl
@@ -77,7 +77,7 @@ getPageSetupData(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec previewFile(This, Htmlfile) -> boolean() when
 	This::wxHtmlEasyPrinting(), Htmlfile::unicode:chardata().
 previewFile(#wx_ref{type=ThisT,ref=ThisRef},Htmlfile)
- when is_list(Htmlfile) ->
+ when ?is_chardata(Htmlfile) ->
   ?CLASS(ThisT,wxHtmlEasyPrinting),
   Htmlfile_UC = unicode:characters_to_binary([Htmlfile,0]),
   wxe_util:call(?wxHtmlEasyPrinting_PreviewFile,
@@ -88,7 +88,7 @@ previewFile(#wx_ref{type=ThisT,ref=ThisRef},Htmlfile)
 	This::wxHtmlEasyPrinting(), Htmltext::unicode:chardata().
 
 previewText(This,Htmltext)
- when is_record(This, wx_ref),is_list(Htmltext) ->
+ when is_record(This, wx_ref),?is_chardata(Htmltext) ->
   previewText(This,Htmltext, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxhtmleasyprinting.html#wxhtmleasyprintingpreviewtext">external documentation</a>.
@@ -96,7 +96,7 @@ previewText(This,Htmltext)
 	This::wxHtmlEasyPrinting(), Htmltext::unicode:chardata(),
 	Option :: {'basepath', unicode:chardata()}.
 previewText(#wx_ref{type=ThisT,ref=ThisRef},Htmltext, Options)
- when is_list(Htmltext),is_list(Options) ->
+ when ?is_chardata(Htmltext),is_list(Options) ->
   ?CLASS(ThisT,wxHtmlEasyPrinting),
   Htmltext_UC = unicode:characters_to_binary([Htmltext,0]),
   MOpts = fun({basepath, Basepath}, Acc) ->   Basepath_UC = unicode:characters_to_binary([Basepath,0]),[<<1:32/?UI,(byte_size(Basepath_UC)):32/?UI,(Basepath_UC)/binary, 0:(((8- ((0+byte_size(Basepath_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -109,7 +109,7 @@ previewText(#wx_ref{type=ThisT,ref=ThisRef},Htmltext, Options)
 -spec printFile(This, Htmlfile) -> boolean() when
 	This::wxHtmlEasyPrinting(), Htmlfile::unicode:chardata().
 printFile(#wx_ref{type=ThisT,ref=ThisRef},Htmlfile)
- when is_list(Htmlfile) ->
+ when ?is_chardata(Htmlfile) ->
   ?CLASS(ThisT,wxHtmlEasyPrinting),
   Htmlfile_UC = unicode:characters_to_binary([Htmlfile,0]),
   wxe_util:call(?wxHtmlEasyPrinting_PrintFile,
@@ -120,7 +120,7 @@ printFile(#wx_ref{type=ThisT,ref=ThisRef},Htmlfile)
 	This::wxHtmlEasyPrinting(), Htmltext::unicode:chardata().
 
 printText(This,Htmltext)
- when is_record(This, wx_ref),is_list(Htmltext) ->
+ when is_record(This, wx_ref),?is_chardata(Htmltext) ->
   printText(This,Htmltext, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxhtmleasyprinting.html#wxhtmleasyprintingprinttext">external documentation</a>.
@@ -128,7 +128,7 @@ printText(This,Htmltext)
 	This::wxHtmlEasyPrinting(), Htmltext::unicode:chardata(),
 	Option :: {'basepath', unicode:chardata()}.
 printText(#wx_ref{type=ThisT,ref=ThisRef},Htmltext, Options)
- when is_list(Htmltext),is_list(Options) ->
+ when ?is_chardata(Htmltext),is_list(Options) ->
   ?CLASS(ThisT,wxHtmlEasyPrinting),
   Htmltext_UC = unicode:characters_to_binary([Htmltext,0]),
   MOpts = fun({basepath, Basepath}, Acc) ->   Basepath_UC = unicode:characters_to_binary([Basepath,0]),[<<1:32/?UI,(byte_size(Basepath_UC)):32/?UI,(Basepath_UC)/binary, 0:(((8- ((0+byte_size(Basepath_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -150,7 +150,7 @@ pageSetup(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxHtmlEasyPrinting(), Normal_face::unicode:chardata(), Fixed_face::unicode:chardata().
 
 setFonts(This,Normal_face,Fixed_face)
- when is_record(This, wx_ref),is_list(Normal_face),is_list(Fixed_face) ->
+ when is_record(This, wx_ref),?is_chardata(Normal_face),?is_chardata(Fixed_face) ->
   setFonts(This,Normal_face,Fixed_face, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxhtmleasyprinting.html#wxhtmleasyprintingsetfonts">external documentation</a>.
@@ -158,7 +158,7 @@ setFonts(This,Normal_face,Fixed_face)
 	This::wxHtmlEasyPrinting(), Normal_face::unicode:chardata(), Fixed_face::unicode:chardata(),
 	Option :: {'sizes', [integer()]}.
 setFonts(#wx_ref{type=ThisT,ref=ThisRef},Normal_face,Fixed_face, Options)
- when is_list(Normal_face),is_list(Fixed_face),is_list(Options) ->
+ when ?is_chardata(Normal_face),?is_chardata(Fixed_face),is_list(Options) ->
   ?CLASS(ThisT,wxHtmlEasyPrinting),
   Normal_face_UC = unicode:characters_to_binary([Normal_face,0]),
   Fixed_face_UC = unicode:characters_to_binary([Fixed_face,0]),
@@ -174,7 +174,7 @@ setFonts(#wx_ref{type=ThisT,ref=ThisRef},Normal_face,Fixed_face, Options)
 	This::wxHtmlEasyPrinting(), Header::unicode:chardata().
 
 setHeader(This,Header)
- when is_record(This, wx_ref),is_list(Header) ->
+ when is_record(This, wx_ref),?is_chardata(Header) ->
   setHeader(This,Header, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxhtmleasyprinting.html#wxhtmleasyprintingsetheader">external documentation</a>.
@@ -182,7 +182,7 @@ setHeader(This,Header)
 	This::wxHtmlEasyPrinting(), Header::unicode:chardata(),
 	Option :: {'pg', integer()}.
 setHeader(#wx_ref{type=ThisT,ref=ThisRef},Header, Options)
- when is_list(Header),is_list(Options) ->
+ when ?is_chardata(Header),is_list(Options) ->
   ?CLASS(ThisT,wxHtmlEasyPrinting),
   Header_UC = unicode:characters_to_binary([Header,0]),
   MOpts = fun({pg, Pg}, Acc) -> [<<1:32/?UI,Pg:32/?UI>>|Acc];
@@ -196,7 +196,7 @@ setHeader(#wx_ref{type=ThisT,ref=ThisRef},Header, Options)
 	This::wxHtmlEasyPrinting(), Footer::unicode:chardata().
 
 setFooter(This,Footer)
- when is_record(This, wx_ref),is_list(Footer) ->
+ when is_record(This, wx_ref),?is_chardata(Footer) ->
   setFooter(This,Footer, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxhtmleasyprinting.html#wxhtmleasyprintingsetfooter">external documentation</a>.
@@ -204,7 +204,7 @@ setFooter(This,Footer)
 	This::wxHtmlEasyPrinting(), Footer::unicode:chardata(),
 	Option :: {'pg', integer()}.
 setFooter(#wx_ref{type=ThisT,ref=ThisRef},Footer, Options)
- when is_list(Footer),is_list(Options) ->
+ when ?is_chardata(Footer),is_list(Options) ->
   ?CLASS(ThisT,wxHtmlEasyPrinting),
   Footer_UC = unicode:characters_to_binary([Footer,0]),
   MOpts = fun({pg, Pg}, Acc) -> [<<1:32/?UI,Pg:32/?UI>>|Acc];
diff --git a/lib/wx/src/gen/wxHtmlWindow.erl b/lib/wx/src/gen/wxHtmlWindow.erl
index 8bc317ad73..c8a3ed5188 100644
--- a/lib/wx/src/gen/wxHtmlWindow.erl
+++ b/lib/wx/src/gen/wxHtmlWindow.erl
@@ -127,7 +127,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef}, Options)
 -spec appendToPage(This, Source) -> boolean() when
 	This::wxHtmlWindow(), Source::unicode:chardata().
 appendToPage(#wx_ref{type=ThisT,ref=ThisRef},Source)
- when is_list(Source) ->
+ when ?is_chardata(Source) ->
   ?CLASS(ThisT,wxHtmlWindow),
   Source_UC = unicode:characters_to_binary([Source,0]),
   wxe_util:call(?wxHtmlWindow_AppendToPage,
@@ -209,7 +209,7 @@ historyForward(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec loadFile(This, Filename) -> boolean() when
 	This::wxHtmlWindow(), Filename::unicode:chardata().
 loadFile(#wx_ref{type=ThisT,ref=ThisRef},Filename)
- when is_list(Filename) ->
+ when ?is_chardata(Filename) ->
   ?CLASS(ThisT,wxHtmlWindow),
   Filename_UC = unicode:characters_to_binary([Filename,0]),
   wxe_util:call(?wxHtmlWindow_LoadFile,
@@ -219,7 +219,7 @@ loadFile(#wx_ref{type=ThisT,ref=ThisRef},Filename)
 -spec loadPage(This, Location) -> boolean() when
 	This::wxHtmlWindow(), Location::unicode:chardata().
 loadPage(#wx_ref{type=ThisT,ref=ThisRef},Location)
- when is_list(Location) ->
+ when ?is_chardata(Location) ->
   ?CLASS(ThisT,wxHtmlWindow),
   Location_UC = unicode:characters_to_binary([Location,0]),
   wxe_util:call(?wxHtmlWindow_LoadPage,
@@ -273,7 +273,7 @@ setBorders(#wx_ref{type=ThisT,ref=ThisRef},B)
 	This::wxHtmlWindow(), Normal_face::unicode:chardata(), Fixed_face::unicode:chardata().
 
 setFonts(This,Normal_face,Fixed_face)
- when is_record(This, wx_ref),is_list(Normal_face),is_list(Fixed_face) ->
+ when is_record(This, wx_ref),?is_chardata(Normal_face),?is_chardata(Fixed_face) ->
   setFonts(This,Normal_face,Fixed_face, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxhtmlwindow.html#wxhtmlwindowsetfonts">external documentation</a>.
@@ -281,7 +281,7 @@ setFonts(This,Normal_face,Fixed_face)
 	This::wxHtmlWindow(), Normal_face::unicode:chardata(), Fixed_face::unicode:chardata(),
 	Option :: {'sizes', integer()}.
 setFonts(#wx_ref{type=ThisT,ref=ThisRef},Normal_face,Fixed_face, Options)
- when is_list(Normal_face),is_list(Fixed_face),is_list(Options) ->
+ when ?is_chardata(Normal_face),?is_chardata(Fixed_face),is_list(Options) ->
   ?CLASS(ThisT,wxHtmlWindow),
   Normal_face_UC = unicode:characters_to_binary([Normal_face,0]),
   Fixed_face_UC = unicode:characters_to_binary([Fixed_face,0]),
@@ -295,7 +295,7 @@ setFonts(#wx_ref{type=ThisT,ref=ThisRef},Normal_face,Fixed_face, Options)
 -spec setPage(This, Source) -> boolean() when
 	This::wxHtmlWindow(), Source::unicode:chardata().
 setPage(#wx_ref{type=ThisT,ref=ThisRef},Source)
- when is_list(Source) ->
+ when ?is_chardata(Source) ->
   ?CLASS(ThisT,wxHtmlWindow),
   Source_UC = unicode:characters_to_binary([Source,0]),
   wxe_util:call(?wxHtmlWindow_SetPage,
@@ -305,7 +305,7 @@ setPage(#wx_ref{type=ThisT,ref=ThisRef},Source)
 -spec setRelatedFrame(This, Frame, Format) -> 'ok' when
 	This::wxHtmlWindow(), Frame::wxFrame:wxFrame(), Format::unicode:chardata().
 setRelatedFrame(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=FrameT,ref=FrameRef},Format)
- when is_list(Format) ->
+ when ?is_chardata(Format) ->
   ?CLASS(ThisT,wxHtmlWindow),
   ?CLASS(FrameT,wxFrame),
   Format_UC = unicode:characters_to_binary([Format,0]),
diff --git a/lib/wx/src/gen/wxIcon.erl b/lib/wx/src/gen/wxIcon.erl
index c9ec32dffc..9739a403ff 100644
--- a/lib/wx/src/gen/wxIcon.erl
+++ b/lib/wx/src/gen/wxIcon.erl
@@ -60,7 +60,7 @@ new() ->
 	Loc::wx:wx_object().
 
 new(Filename)
- when is_list(Filename) ->
+ when ?is_chardata(Filename) ->
   new(Filename, []);
 new(#wx_ref{type=LocT,ref=LocRef}) ->
   ?CLASS(LocT,wx),
@@ -75,7 +75,7 @@ new(#wx_ref{type=LocT,ref=LocRef}) ->
 		 | {'desiredWidth', integer()}
 		 | {'desiredHeight', integer()}.
 new(Filename, Options)
- when is_list(Filename),is_list(Options) ->
+ when ?is_chardata(Filename),is_list(Options) ->
   Filename_UC = unicode:characters_to_binary([Filename,0]),
   MOpts = fun({type, Type}, Acc) -> [<<1:32/?UI,Type:32/?UI>>|Acc];
           ({desiredWidth, DesiredWidth}, Acc) -> [<<2:32/?UI,DesiredWidth:32/?UI>>|Acc];
diff --git a/lib/wx/src/gen/wxIconBundle.erl b/lib/wx/src/gen/wxIconBundle.erl
index 47785963e3..aecf382a9f 100644
--- a/lib/wx/src/gen/wxIconBundle.erl
+++ b/lib/wx/src/gen/wxIconBundle.erl
@@ -58,7 +58,7 @@ new(#wx_ref{type=IcT,ref=IcRef}) ->
 -spec new(File, Type) -> wxIconBundle() when
 	File::unicode:chardata(), Type::integer().
 new(File,Type)
- when is_list(File),is_integer(Type) ->
+ when ?is_chardata(File),is_integer(Type) ->
   File_UC = unicode:characters_to_binary([File,0]),
   wxe_util:construct(?wxIconBundle_new_2,
   <<(byte_size(File_UC)):32/?UI,(File_UC)/binary, 0:(((8- ((4+byte_size(File_UC)) band 16#7)) band 16#7))/unit:8,Type:32/?UI>>).
@@ -76,7 +76,7 @@ addIcon(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=IconT,ref=IconRef}) ->
 -spec addIcon(This, File, Type) -> 'ok' when
 	This::wxIconBundle(), File::unicode:chardata(), Type::integer().
 addIcon(#wx_ref{type=ThisT,ref=ThisRef},File,Type)
- when is_list(File),is_integer(Type) ->
+ when ?is_chardata(File),is_integer(Type) ->
   ?CLASS(ThisT,wxIconBundle),
   File_UC = unicode:characters_to_binary([File,0]),
   wxe_util:cast(?wxIconBundle_AddIcon_2,
diff --git a/lib/wx/src/gen/wxImage.erl b/lib/wx/src/gen/wxImage.erl
index e82f3d609e..f3b3d393d1 100644
--- a/lib/wx/src/gen/wxImage.erl
+++ b/lib/wx/src/gen/wxImage.erl
@@ -64,7 +64,7 @@ new() ->
 	Name::unicode:chardata().
 
 new(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   new(Name, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wximage.html#wximagewximage">external documentation</a>.
@@ -85,7 +85,7 @@ new(Width,Height)
  when is_integer(Width),is_integer(Height) ->
   new(Width,Height, []);
 new(Name, Options)
- when is_list(Name),is_list(Options) ->
+ when ?is_chardata(Name),is_list(Options) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   MOpts = fun({type, Type}, Acc) -> [<<1:32/?UI,Type:32/?UI>>|Acc];
           ({index, Index}, Acc) -> [<<2:32/?UI,Index:32/?UI>>|Acc];
@@ -123,7 +123,7 @@ new(Width,Height, Options)
   wxe_util:construct(?wxImage_new_3_0,
   <<Width:32/?UI,Height:32/?UI, BinOpt/binary>>);
 new(Name,Mimetype, Options)
- when is_list(Name),is_list(Mimetype),is_list(Options) ->
+ when ?is_chardata(Name),?is_chardata(Mimetype),is_list(Options) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   Mimetype_UC = unicode:characters_to_binary([Mimetype,0]),
   MOpts = fun({index, Index}, Acc) -> [<<1:32/?UI,Index:32/?UI>>|Acc];
@@ -421,7 +421,7 @@ getGreen(#wx_ref{type=ThisT,ref=ThisRef},X,Y)
 	Name::unicode:chardata().
 
 getImageCount(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   getImageCount(Name, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wximage.html#wximagegetimagecount">external documentation</a>.
@@ -430,7 +430,7 @@ getImageCount(Name)
 	Name::unicode:chardata(),
 	Option :: {'type', wx:wx_enum()}.
 getImageCount(Name, Options)
- when is_list(Name),is_list(Options) ->
+ when ?is_chardata(Name),is_list(Options) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   MOpts = fun({type, Type}, Acc) -> [<<1:32/?UI,Type:32/?UI>>|Acc];
           (BadOpt, _) -> erlang:error({badoption, BadOpt}) end,
@@ -533,7 +533,7 @@ hasMask(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec getOption(This, Name) -> unicode:charlist() when
 	This::wxImage(), Name::unicode:chardata().
 getOption(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxImage_GetOption,
@@ -543,7 +543,7 @@ getOption(#wx_ref{type=ThisT,ref=ThisRef},Name)
 -spec getOptionInt(This, Name) -> integer() when
 	This::wxImage(), Name::unicode:chardata().
 getOptionInt(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxImage_GetOptionInt,
@@ -553,7 +553,7 @@ getOptionInt(#wx_ref{type=ThisT,ref=ThisRef},Name)
 -spec hasOption(This, Name) -> boolean() when
 	This::wxImage(), Name::unicode:chardata().
 hasOption(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxImage_HasOption,
@@ -599,7 +599,7 @@ isTransparent(#wx_ref{type=ThisT,ref=ThisRef},X,Y, Options)
 	This::wxImage(), Name::unicode:chardata().
 
 loadFile(This,Name)
- when is_record(This, wx_ref),is_list(Name) ->
+ when is_record(This, wx_ref),?is_chardata(Name) ->
   loadFile(This,Name, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wximage.html#wximageloadfile">external documentation</a>.
@@ -608,7 +608,7 @@ loadFile(This,Name)
 	Option :: {'type', integer()}
 		 | {'index', integer()}.
 loadFile(#wx_ref{type=ThisT,ref=ThisRef},Name, Options)
- when is_list(Name),is_list(Options) ->
+ when ?is_chardata(Name),is_list(Options) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   MOpts = fun({type, Type}, Acc) -> [<<1:32/?UI,Type:32/?UI>>|Acc];
@@ -623,7 +623,7 @@ loadFile(#wx_ref{type=ThisT,ref=ThisRef},Name, Options)
 	This::wxImage(), Name::unicode:chardata(), Mimetype::unicode:chardata(),
 	Option :: {'index', integer()}.
 loadFile(#wx_ref{type=ThisT,ref=ThisRef},Name,Mimetype, Options)
- when is_list(Name),is_list(Mimetype),is_list(Options) ->
+ when ?is_chardata(Name),?is_chardata(Mimetype),is_list(Options) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   Mimetype_UC = unicode:characters_to_binary([Mimetype,0]),
@@ -645,7 +645,7 @@ ok(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec removeHandler(Name) -> boolean() when
 	Name::unicode:chardata().
 removeHandler(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxImage_RemoveHandler,
   <<(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((4+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -784,7 +784,7 @@ rotate90(#wx_ref{type=ThisT,ref=ThisRef}, Options)
 -spec saveFile(This, Name) -> boolean() when
 	This::wxImage(), Name::unicode:chardata().
 saveFile(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxImage_SaveFile_1,
@@ -800,13 +800,13 @@ saveFile(#wx_ref{type=ThisT,ref=ThisRef},Name)
       (This, Name, Mimetype) -> boolean() when
 	This::wxImage(), Name::unicode:chardata(), Mimetype::unicode:chardata().
 saveFile(#wx_ref{type=ThisT,ref=ThisRef},Name,Type)
- when is_list(Name),is_integer(Type) ->
+ when ?is_chardata(Name),is_integer(Type) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxImage_SaveFile_2_0,
   <<ThisRef:32/?UI,(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((0+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8,Type:32/?UI>>);
 saveFile(#wx_ref{type=ThisT,ref=ThisRef},Name,Mimetype)
- when is_list(Name),is_list(Mimetype) ->
+ when ?is_chardata(Name),?is_chardata(Mimetype) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   Mimetype_UC = unicode:characters_to_binary([Mimetype,0]),
@@ -985,13 +985,13 @@ setMaskFromImage(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=MaskT,ref=MaskRef}
       (This, Name, Value) -> 'ok' when
 	This::wxImage(), Name::unicode:chardata(), Value::unicode:chardata().
 setOption(#wx_ref{type=ThisT,ref=ThisRef},Name,Value)
- when is_list(Name),is_integer(Value) ->
+ when ?is_chardata(Name),is_integer(Value) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:cast(?wxImage_SetOption_2_0,
   <<ThisRef:32/?UI,(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((0+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8,Value:32/?UI>>);
 setOption(#wx_ref{type=ThisT,ref=ThisRef},Name,Value)
- when is_list(Name),is_list(Value) ->
+ when ?is_chardata(Name),?is_chardata(Value) ->
   ?CLASS(ThisT,wxImage),
   Name_UC = unicode:characters_to_binary([Name,0]),
   Value_UC = unicode:characters_to_binary([Value,0]),
diff --git a/lib/wx/src/gen/wxListBox.erl b/lib/wx/src/gen/wxListBox.erl
index a11d81574b..e1c96f2501 100644
--- a/lib/wx/src/gen/wxListBox.erl
+++ b/lib/wx/src/gen/wxListBox.erl
@@ -220,7 +220,7 @@ setFirstItem(#wx_ref{type=ThisT,ref=ThisRef},N)
   wxe_util:cast(?wxListBox_SetFirstItem_1_0,
   <<ThisRef:32/?UI,N:32/?UI>>);
 setFirstItem(#wx_ref{type=ThisT,ref=ThisRef},S)
- when is_list(S) ->
+ when ?is_chardata(S) ->
   ?CLASS(ThisT,wxListBox),
   S_UC = unicode:characters_to_binary([S,0]),
   wxe_util:cast(?wxListBox_SetFirstItem_1_1,
diff --git a/lib/wx/src/gen/wxListCtrl.erl b/lib/wx/src/gen/wxListCtrl.erl
index 47d83be3e2..0c2e9d0d0a 100644
--- a/lib/wx/src/gen/wxListCtrl.erl
+++ b/lib/wx/src/gen/wxListCtrl.erl
@@ -272,7 +272,7 @@ ensureVisible(#wx_ref{type=ThisT,ref=ThisRef},Item)
 	This::wxListCtrl(), Start::integer(), Str::unicode:chardata().
 
 findItem(This,Start,Str)
- when is_record(This, wx_ref),is_integer(Start),is_list(Str) ->
+ when is_record(This, wx_ref),is_integer(Start),?is_chardata(Str) ->
   findItem(This,Start,Str, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxlistctrl.html#wxlistctrlfinditem">external documentation</a>.
@@ -286,7 +286,7 @@ findItem(This,Start,Str)
       (This, Start, Pt, Direction) -> integer() when
 	This::wxListCtrl(), Start::integer(), Pt::{X::integer(), Y::integer()}, Direction::integer().
 findItem(#wx_ref{type=ThisT,ref=ThisRef},Start,Str, Options)
- when is_integer(Start),is_list(Str),is_list(Options) ->
+ when is_integer(Start),?is_chardata(Str),is_list(Options) ->
   ?CLASS(ThisT,wxListCtrl),
   Str_UC = unicode:characters_to_binary([Str,0]),
   MOpts = fun({partial, Partial}, Acc) -> [<<1:32/?UI,(wxe_util:from_bool(Partial)):32/?UI>>|Acc];
@@ -540,7 +540,7 @@ hitTest(#wx_ref{type=ThisT,ref=ThisRef},{PointX,PointY})
 	This::wxListCtrl(), Col::integer(), Info::wxListItem:wxListItem().
 
 insertColumn(This,Col,Heading)
- when is_record(This, wx_ref),is_integer(Col),is_list(Heading) ->
+ when is_record(This, wx_ref),is_integer(Col),?is_chardata(Heading) ->
   insertColumn(This,Col,Heading, []);
 insertColumn(#wx_ref{type=ThisT,ref=ThisRef},Col,#wx_ref{type=InfoT,ref=InfoRef})
  when is_integer(Col) ->
@@ -555,7 +555,7 @@ insertColumn(#wx_ref{type=ThisT,ref=ThisRef},Col,#wx_ref{type=InfoT,ref=InfoRef}
 	Option :: {'format', integer()}
 		 | {'width', integer()}.
 insertColumn(#wx_ref{type=ThisT,ref=ThisRef},Col,Heading, Options)
- when is_integer(Col),is_list(Heading),is_list(Options) ->
+ when is_integer(Col),?is_chardata(Heading),is_list(Options) ->
   ?CLASS(ThisT,wxListCtrl),
   Heading_UC = unicode:characters_to_binary([Heading,0]),
   MOpts = fun({format, Format}, Acc) -> [<<1:32/?UI,Format:32/?UI>>|Acc];
@@ -589,7 +589,7 @@ insertItem(#wx_ref{type=ThisT,ref=ThisRef},Index,ImageIndex)
   wxe_util:call(?wxListCtrl_InsertItem_2_0,
   <<ThisRef:32/?UI,Index:32/?UI,ImageIndex:32/?UI>>);
 insertItem(#wx_ref{type=ThisT,ref=ThisRef},Index,Label)
- when is_integer(Index),is_list(Label) ->
+ when is_integer(Index),?is_chardata(Label) ->
   ?CLASS(ThisT,wxListCtrl),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:call(?wxListCtrl_InsertItem_2_1,
@@ -599,7 +599,7 @@ insertItem(#wx_ref{type=ThisT,ref=ThisRef},Index,Label)
 -spec insertItem(This, Index, Label, ImageIndex) -> integer() when
 	This::wxListCtrl(), Index::integer(), Label::unicode:chardata(), ImageIndex::integer().
 insertItem(#wx_ref{type=ThisT,ref=ThisRef},Index,Label,ImageIndex)
- when is_integer(Index),is_list(Label),is_integer(ImageIndex) ->
+ when is_integer(Index),?is_chardata(Label),is_integer(ImageIndex) ->
   ?CLASS(ThisT,wxListCtrl),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:call(?wxListCtrl_InsertItem_3,
@@ -684,7 +684,7 @@ setItem(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=InfoT,ref=InfoRef}) ->
 	This::wxListCtrl(), Index::integer(), Col::integer(), Label::unicode:chardata().
 
 setItem(This,Index,Col,Label)
- when is_record(This, wx_ref),is_integer(Index),is_integer(Col),is_list(Label) ->
+ when is_record(This, wx_ref),is_integer(Index),is_integer(Col),?is_chardata(Label) ->
   setItem(This,Index,Col,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxlistctrl.html#wxlistctrlsetitem">external documentation</a>.
@@ -692,7 +692,7 @@ setItem(This,Index,Col,Label)
 	This::wxListCtrl(), Index::integer(), Col::integer(), Label::unicode:chardata(),
 	Option :: {'imageId', integer()}.
 setItem(#wx_ref{type=ThisT,ref=ThisRef},Index,Col,Label, Options)
- when is_integer(Index),is_integer(Col),is_list(Label),is_list(Options) ->
+ when is_integer(Index),is_integer(Col),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxListCtrl),
   Label_UC = unicode:characters_to_binary([Label,0]),
   MOpts = fun({imageId, ImageId}, Acc) -> [<<1:32/?UI,ImageId:32/?UI>>|Acc];
@@ -790,7 +790,7 @@ setItemState(#wx_ref{type=ThisT,ref=ThisRef},Item,State,StateMask)
 -spec setItemText(This, Item, Str) -> 'ok' when
 	This::wxListCtrl(), Item::integer(), Str::unicode:chardata().
 setItemText(#wx_ref{type=ThisT,ref=ThisRef},Item,Str)
- when is_integer(Item),is_list(Str) ->
+ when is_integer(Item),?is_chardata(Str) ->
   ?CLASS(ThisT,wxListCtrl),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxListCtrl_SetItemText,
diff --git a/lib/wx/src/gen/wxListItem.erl b/lib/wx/src/gen/wxListItem.erl
index 1530a8c514..56a1719c55 100644
--- a/lib/wx/src/gen/wxListItem.erl
+++ b/lib/wx/src/gen/wxListItem.erl
@@ -236,7 +236,7 @@ setStateMask(#wx_ref{type=ThisT,ref=ThisRef},StateMask)
 -spec setText(This, Text) -> 'ok' when
 	This::wxListItem(), Text::unicode:chardata().
 setText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxListItem),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxListItem_SetText,
diff --git a/lib/wx/src/gen/wxListbook.erl b/lib/wx/src/gen/wxListbook.erl
index f49360cb1d..d27efb2500 100644
--- a/lib/wx/src/gen/wxListbook.erl
+++ b/lib/wx/src/gen/wxListbook.erl
@@ -120,7 +120,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id, Options)
 	This::wxListbook(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 addPage(This,Page,Text)
- when is_record(This, wx_ref),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_record(Page, wx_ref),?is_chardata(Text) ->
   addPage(This,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxlistbook.html#wxlistbookaddpage">external documentation</a>.
@@ -129,7 +129,7 @@ addPage(This,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 addPage(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxListbook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -296,7 +296,7 @@ hitTest(#wx_ref{type=ThisT,ref=ThisRef},{PtX,PtY})
 	This::wxListbook(), N::integer(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 insertPage(This,N,Page,Text)
- when is_record(This, wx_ref),is_integer(N),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(N),is_record(Page, wx_ref),?is_chardata(Text) ->
   insertPage(This,N,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxlistbook.html#wxlistbookinsertpage">external documentation</a>.
@@ -305,7 +305,7 @@ insertPage(This,N,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 insertPage(#wx_ref{type=ThisT,ref=ThisRef},N,#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_integer(N),is_list(Text),is_list(Options) ->
+ when is_integer(N),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxListbook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -347,7 +347,7 @@ setPageImage(#wx_ref{type=ThisT,ref=ThisRef},N,ImageId)
 -spec setPageText(This, N, StrText) -> boolean() when
 	This::wxListbook(), N::integer(), StrText::unicode:chardata().
 setPageText(#wx_ref{type=ThisT,ref=ThisRef},N,StrText)
- when is_integer(N),is_list(StrText) ->
+ when is_integer(N),?is_chardata(StrText) ->
   ?CLASS(ThisT,wxListbook),
   StrText_UC = unicode:characters_to_binary([StrText,0]),
   wxe_util:call(?wxListbook_SetPageText,
diff --git a/lib/wx/src/gen/wxLocale.erl b/lib/wx/src/gen/wxLocale.erl
index d473731bf8..1ce7c3e3e8 100644
--- a/lib/wx/src/gen/wxLocale.erl
+++ b/lib/wx/src/gen/wxLocale.erl
@@ -92,7 +92,7 @@ init(#wx_ref{type=ThisT,ref=ThisRef}, Options)
 -spec addCatalog(This, SzDomain) -> boolean() when
 	This::wxLocale(), SzDomain::unicode:chardata().
 addCatalog(#wx_ref{type=ThisT,ref=ThisRef},SzDomain)
- when is_list(SzDomain) ->
+ when ?is_chardata(SzDomain) ->
   ?CLASS(ThisT,wxLocale),
   SzDomain_UC = unicode:characters_to_binary([SzDomain,0]),
   wxe_util:call(?wxLocale_AddCatalog_1,
@@ -103,7 +103,7 @@ addCatalog(#wx_ref{type=ThisT,ref=ThisRef},SzDomain)
 -spec addCatalog(This, SzDomain, MsgIdLanguage, MsgIdCharset) -> boolean() when
 	This::wxLocale(), SzDomain::unicode:chardata(), MsgIdLanguage::wx:wx_enum(), MsgIdCharset::unicode:chardata().
 addCatalog(#wx_ref{type=ThisT,ref=ThisRef},SzDomain,MsgIdLanguage,MsgIdCharset)
- when is_list(SzDomain),is_integer(MsgIdLanguage),is_list(MsgIdCharset) ->
+ when ?is_chardata(SzDomain),is_integer(MsgIdLanguage),?is_chardata(MsgIdCharset) ->
   ?CLASS(ThisT,wxLocale),
   SzDomain_UC = unicode:characters_to_binary([SzDomain,0]),
   MsgIdCharset_UC = unicode:characters_to_binary([MsgIdCharset,0]),
@@ -114,7 +114,7 @@ addCatalog(#wx_ref{type=ThisT,ref=ThisRef},SzDomain,MsgIdLanguage,MsgIdCharset)
 -spec addCatalogLookupPathPrefix(Prefix) -> 'ok' when
 	Prefix::unicode:chardata().
 addCatalogLookupPathPrefix(Prefix)
- when is_list(Prefix) ->
+ when ?is_chardata(Prefix) ->
   Prefix_UC = unicode:characters_to_binary([Prefix,0]),
   wxe_util:cast(?wxLocale_AddCatalogLookupPathPrefix,
   <<(byte_size(Prefix_UC)):32/?UI,(Prefix_UC)/binary, 0:(((8- ((4+byte_size(Prefix_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -164,7 +164,7 @@ getName(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxLocale(), SzOrigString::unicode:chardata().
 
 getString(This,SzOrigString)
- when is_record(This, wx_ref),is_list(SzOrigString) ->
+ when is_record(This, wx_ref),?is_chardata(SzOrigString) ->
   getString(This,SzOrigString, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxlocale.html#wxlocalegetstring">external documentation</a>.
@@ -172,7 +172,7 @@ getString(This,SzOrigString)
 	This::wxLocale(), SzOrigString::unicode:chardata(),
 	Option :: {'szDomain', unicode:chardata()}.
 getString(#wx_ref{type=ThisT,ref=ThisRef},SzOrigString, Options)
- when is_list(SzOrigString),is_list(Options) ->
+ when ?is_chardata(SzOrigString),is_list(Options) ->
   ?CLASS(ThisT,wxLocale),
   SzOrigString_UC = unicode:characters_to_binary([SzOrigString,0]),
   MOpts = fun({szDomain, SzDomain}, Acc) ->   SzDomain_UC = unicode:characters_to_binary([SzDomain,0]),[<<1:32/?UI,(byte_size(SzDomain_UC)):32/?UI,(SzDomain_UC)/binary, 0:(((8- ((0+byte_size(SzDomain_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -186,7 +186,7 @@ getString(#wx_ref{type=ThisT,ref=ThisRef},SzOrigString, Options)
 	This::wxLocale(), SzOrigString::unicode:chardata(), SzOrigString2::unicode:chardata(), N::integer().
 
 getString(This,SzOrigString,SzOrigString2,N)
- when is_record(This, wx_ref),is_list(SzOrigString),is_list(SzOrigString2),is_integer(N) ->
+ when is_record(This, wx_ref),?is_chardata(SzOrigString),?is_chardata(SzOrigString2),is_integer(N) ->
   getString(This,SzOrigString,SzOrigString2,N, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxlocale.html#wxlocalegetstring">external documentation</a>.
@@ -194,7 +194,7 @@ getString(This,SzOrigString,SzOrigString2,N)
 	This::wxLocale(), SzOrigString::unicode:chardata(), SzOrigString2::unicode:chardata(), N::integer(),
 	Option :: {'szDomain', unicode:chardata()}.
 getString(#wx_ref{type=ThisT,ref=ThisRef},SzOrigString,SzOrigString2,N, Options)
- when is_list(SzOrigString),is_list(SzOrigString2),is_integer(N),is_list(Options) ->
+ when ?is_chardata(SzOrigString),?is_chardata(SzOrigString2),is_integer(N),is_list(Options) ->
   ?CLASS(ThisT,wxLocale),
   SzOrigString_UC = unicode:characters_to_binary([SzOrigString,0]),
   SzOrigString2_UC = unicode:characters_to_binary([SzOrigString2,0]),
@@ -209,7 +209,7 @@ getString(#wx_ref{type=ThisT,ref=ThisRef},SzOrigString,SzOrigString2,N, Options)
 	This::wxLocale(), SzHeader::unicode:chardata().
 
 getHeaderValue(This,SzHeader)
- when is_record(This, wx_ref),is_list(SzHeader) ->
+ when is_record(This, wx_ref),?is_chardata(SzHeader) ->
   getHeaderValue(This,SzHeader, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxlocale.html#wxlocalegetheadervalue">external documentation</a>.
@@ -217,7 +217,7 @@ getHeaderValue(This,SzHeader)
 	This::wxLocale(), SzHeader::unicode:chardata(),
 	Option :: {'szDomain', unicode:chardata()}.
 getHeaderValue(#wx_ref{type=ThisT,ref=ThisRef},SzHeader, Options)
- when is_list(SzHeader),is_list(Options) ->
+ when ?is_chardata(SzHeader),is_list(Options) ->
   ?CLASS(ThisT,wxLocale),
   SzHeader_UC = unicode:characters_to_binary([SzHeader,0]),
   MOpts = fun({szDomain, SzDomain}, Acc) ->   SzDomain_UC = unicode:characters_to_binary([SzDomain,0]),[<<1:32/?UI,(byte_size(SzDomain_UC)):32/?UI,(SzDomain_UC)/binary, 0:(((8- ((0+byte_size(SzDomain_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -257,7 +257,7 @@ getSystemLanguage() ->
 -spec isLoaded(This, SzDomain) -> boolean() when
 	This::wxLocale(), SzDomain::unicode:chardata().
 isLoaded(#wx_ref{type=ThisT,ref=ThisRef},SzDomain)
- when is_list(SzDomain) ->
+ when ?is_chardata(SzDomain) ->
   ?CLASS(ThisT,wxLocale),
   SzDomain_UC = unicode:characters_to_binary([SzDomain,0]),
   wxe_util:call(?wxLocale_IsLoaded,
diff --git a/lib/wx/src/gen/wxMDIChildFrame.erl b/lib/wx/src/gen/wxMDIChildFrame.erl
index 114c37d830..6ff47259b4 100644
--- a/lib/wx/src/gen/wxMDIChildFrame.erl
+++ b/lib/wx/src/gen/wxMDIChildFrame.erl
@@ -102,7 +102,7 @@ new() ->
 	Parent::wxMDIParentFrame:wxMDIParentFrame(), Id::integer(), Title::unicode:chardata().
 
 new(Parent,Id,Title)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   new(Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmdichildframe.html#wxmdichildframewxmdichildframe">external documentation</a>.
@@ -112,7 +112,7 @@ new(Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ParentT,wxMDIParentFrame),
   Title_UC = unicode:characters_to_binary([Title,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -136,7 +136,7 @@ activate(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxMDIChildFrame(), Parent::wxMDIParentFrame:wxMDIParentFrame(), Id::integer(), Title::unicode:chardata().
 
 create(This,Parent,Id,Title)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   create(This,Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmdichildframe.html#wxmdichildframecreate">external documentation</a>.
@@ -146,7 +146,7 @@ create(This,Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ThisT,wxMDIChildFrame),
   ?CLASS(ParentT,wxMDIParentFrame),
   Title_UC = unicode:characters_to_binary([Title,0]),
diff --git a/lib/wx/src/gen/wxMDIParentFrame.erl b/lib/wx/src/gen/wxMDIParentFrame.erl
index d071e05d1b..f4d06a2658 100644
--- a/lib/wx/src/gen/wxMDIParentFrame.erl
+++ b/lib/wx/src/gen/wxMDIParentFrame.erl
@@ -103,7 +103,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 new(Parent,Id,Title)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   new(Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmdiparentframe.html#wxmdiparentframewxmdiparentframe">external documentation</a>.
@@ -113,7 +113,7 @@ new(Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -161,7 +161,7 @@ cascade(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxMDIParentFrame(), Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 create(This,Parent,Id,Title)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   create(This,Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmdiparentframe.html#wxmdiparentframecreate">external documentation</a>.
@@ -171,7 +171,7 @@ create(This,Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ThisT,wxMDIParentFrame),
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
diff --git a/lib/wx/src/gen/wxMenu.erl b/lib/wx/src/gen/wxMenu.erl
index 317ea38685..26fe23701d 100644
--- a/lib/wx/src/gen/wxMenu.erl
+++ b/lib/wx/src/gen/wxMenu.erl
@@ -69,7 +69,7 @@ new(Options)
 	Title::unicode:chardata(),
 	Option :: {'style', integer()}.
 new(Title, Options)
- when is_list(Title),is_list(Options) ->
+ when ?is_chardata(Title),is_list(Options) ->
   Title_UC = unicode:characters_to_binary([Title,0]),
   MOpts = fun({style, Style}, Acc) -> [<<1:32/?UI,Style:32/?UI>>|Acc];
           (BadOpt, _) -> erlang:error({badoption, BadOpt}) end,
@@ -91,7 +91,7 @@ append(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ItemT,ref=ItemRef}) ->
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata().
 
 append(This,Itemid,Text)
- when is_record(This, wx_ref),is_integer(Itemid),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Itemid),?is_chardata(Text) ->
   append(This,Itemid,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuappend">external documentation</a>.
@@ -110,10 +110,10 @@ append(This,Itemid,Text)
 		 | {'kind', wx:wx_enum()}.
 
 append(This,Itemid,Text,Submenu)
- when is_record(This, wx_ref),is_integer(Itemid),is_list(Text),is_record(Submenu, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Itemid),?is_chardata(Text),is_record(Submenu, wx_ref) ->
   append(This,Itemid,Text,Submenu, []);
 append(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
- when is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({help, Help}, Acc) ->   Help_UC = unicode:characters_to_binary([Help,0]),[<<1:32/?UI,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((0+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -135,14 +135,14 @@ append(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata(), Submenu::wxMenu(),
 	Option :: {'help', unicode:chardata()}.
 append(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text,Help,IsCheckable)
- when is_integer(Itemid),is_list(Text),is_list(Help),is_boolean(IsCheckable) ->
+ when is_integer(Itemid),?is_chardata(Text),?is_chardata(Help),is_boolean(IsCheckable) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   Help_UC = unicode:characters_to_binary([Help,0]),
   wxe_util:cast(?wxMenu_Append_4_0,
   <<ThisRef:32/?UI,Itemid:32/?UI,(byte_size(Text_UC)):32/?UI,(Text_UC)/binary, 0:(((8- ((4+byte_size(Text_UC)) band 16#7)) band 16#7))/unit:8,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((4+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8,(wxe_util:from_bool(IsCheckable)):32/?UI>>);
 append(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text,#wx_ref{type=SubmenuT,ref=SubmenuRef}, Options)
- when is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   ?CLASS(SubmenuT,wxMenu),
@@ -157,7 +157,7 @@ append(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text,#wx_ref{type=SubmenuT,ref=Sub
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata().
 
 appendCheckItem(This,Itemid,Text)
- when is_record(This, wx_ref),is_integer(Itemid),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Itemid),?is_chardata(Text) ->
   appendCheckItem(This,Itemid,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuappendcheckitem">external documentation</a>.
@@ -165,7 +165,7 @@ appendCheckItem(This,Itemid,Text)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata(),
 	Option :: {'help', unicode:chardata()}.
 appendCheckItem(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
- when is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({help, Help}, Acc) ->   Help_UC = unicode:characters_to_binary([Help,0]),[<<1:32/?UI,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((0+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -179,7 +179,7 @@ appendCheckItem(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata().
 
 appendRadioItem(This,Itemid,Text)
- when is_record(This, wx_ref),is_integer(Itemid),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Itemid),?is_chardata(Text) ->
   appendRadioItem(This,Itemid,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuappendradioitem">external documentation</a>.
@@ -187,7 +187,7 @@ appendRadioItem(This,Itemid,Text)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata(),
 	Option :: {'help', unicode:chardata()}.
 appendRadioItem(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
- when is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({help, Help}, Acc) ->   Help_UC = unicode:characters_to_binary([Help,0]),[<<1:32/?UI,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((0+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -285,7 +285,7 @@ findItem(#wx_ref{type=ThisT,ref=ThisRef},Itemid)
   wxe_util:call(?wxMenu_FindItem_2,
   <<ThisRef:32/?UI,Itemid:32/?UI>>);
 findItem(#wx_ref{type=ThisT,ref=ThisRef},Item)
- when is_list(Item) ->
+ when ?is_chardata(Item) ->
   ?CLASS(ThisT,wxMenu),
   Item_UC = unicode:characters_to_binary([Item,0]),
   wxe_util:call(?wxMenu_FindItem_1,
@@ -386,7 +386,7 @@ insert(#wx_ref{type=ThisT,ref=ThisRef},Pos,Itemid, Options)
 	This::wxMenu(), Pos::integer(), Itemid::integer(), Text::unicode:chardata(), Submenu::wxMenu().
 
 insert(This,Pos,Itemid,Text,Submenu)
- when is_record(This, wx_ref),is_integer(Pos),is_integer(Itemid),is_list(Text),is_record(Submenu, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Pos),is_integer(Itemid),?is_chardata(Text),is_record(Submenu, wx_ref) ->
   insert(This,Pos,Itemid,Text,Submenu, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuinsert">external documentation</a>.
@@ -401,14 +401,14 @@ insert(This,Pos,Itemid,Text,Submenu)
 	This::wxMenu(), Pos::integer(), Itemid::integer(), Text::unicode:chardata(), Submenu::wxMenu(),
 	Option :: {'help', unicode:chardata()}.
 insert(#wx_ref{type=ThisT,ref=ThisRef},Pos,Itemid,Text,Help,IsCheckable)
- when is_integer(Pos),is_integer(Itemid),is_list(Text),is_list(Help),is_boolean(IsCheckable) ->
+ when is_integer(Pos),is_integer(Itemid),?is_chardata(Text),?is_chardata(Help),is_boolean(IsCheckable) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   Help_UC = unicode:characters_to_binary([Help,0]),
   wxe_util:cast(?wxMenu_Insert_5_0,
   <<ThisRef:32/?UI,Pos:32/?UI,Itemid:32/?UI,(byte_size(Text_UC)):32/?UI,(Text_UC)/binary, 0:(((8- ((0+byte_size(Text_UC)) band 16#7)) band 16#7))/unit:8,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((4+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8,(wxe_util:from_bool(IsCheckable)):32/?UI>>);
 insert(#wx_ref{type=ThisT,ref=ThisRef},Pos,Itemid,Text,#wx_ref{type=SubmenuT,ref=SubmenuRef}, Options)
- when is_integer(Pos),is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Pos),is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   ?CLASS(SubmenuT,wxMenu),
@@ -423,7 +423,7 @@ insert(#wx_ref{type=ThisT,ref=ThisRef},Pos,Itemid,Text,#wx_ref{type=SubmenuT,ref
 	This::wxMenu(), Pos::integer(), Itemid::integer(), Text::unicode:chardata().
 
 insertCheckItem(This,Pos,Itemid,Text)
- when is_record(This, wx_ref),is_integer(Pos),is_integer(Itemid),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Pos),is_integer(Itemid),?is_chardata(Text) ->
   insertCheckItem(This,Pos,Itemid,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuinsertcheckitem">external documentation</a>.
@@ -431,7 +431,7 @@ insertCheckItem(This,Pos,Itemid,Text)
 	This::wxMenu(), Pos::integer(), Itemid::integer(), Text::unicode:chardata(),
 	Option :: {'help', unicode:chardata()}.
 insertCheckItem(#wx_ref{type=ThisT,ref=ThisRef},Pos,Itemid,Text, Options)
- when is_integer(Pos),is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Pos),is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({help, Help}, Acc) ->   Help_UC = unicode:characters_to_binary([Help,0]),[<<1:32/?UI,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((0+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -445,7 +445,7 @@ insertCheckItem(#wx_ref{type=ThisT,ref=ThisRef},Pos,Itemid,Text, Options)
 	This::wxMenu(), Pos::integer(), Itemid::integer(), Text::unicode:chardata().
 
 insertRadioItem(This,Pos,Itemid,Text)
- when is_record(This, wx_ref),is_integer(Pos),is_integer(Itemid),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Pos),is_integer(Itemid),?is_chardata(Text) ->
   insertRadioItem(This,Pos,Itemid,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuinsertradioitem">external documentation</a>.
@@ -453,7 +453,7 @@ insertRadioItem(This,Pos,Itemid,Text)
 	This::wxMenu(), Pos::integer(), Itemid::integer(), Text::unicode:chardata(),
 	Option :: {'help', unicode:chardata()}.
 insertRadioItem(#wx_ref{type=ThisT,ref=ThisRef},Pos,Itemid,Text, Options)
- when is_integer(Pos),is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Pos),is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({help, Help}, Acc) ->   Help_UC = unicode:characters_to_binary([Help,0]),[<<1:32/?UI,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((0+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -532,7 +532,7 @@ prepend(#wx_ref{type=ThisT,ref=ThisRef},Itemid, Options)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata(), Submenu::wxMenu().
 
 prepend(This,Itemid,Text,Submenu)
- when is_record(This, wx_ref),is_integer(Itemid),is_list(Text),is_record(Submenu, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Itemid),?is_chardata(Text),is_record(Submenu, wx_ref) ->
   prepend(This,Itemid,Text,Submenu, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuprepend">external documentation</a>.
@@ -547,14 +547,14 @@ prepend(This,Itemid,Text,Submenu)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata(), Submenu::wxMenu(),
 	Option :: {'help', unicode:chardata()}.
 prepend(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text,Help,IsCheckable)
- when is_integer(Itemid),is_list(Text),is_list(Help),is_boolean(IsCheckable) ->
+ when is_integer(Itemid),?is_chardata(Text),?is_chardata(Help),is_boolean(IsCheckable) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   Help_UC = unicode:characters_to_binary([Help,0]),
   wxe_util:cast(?wxMenu_Prepend_4_0,
   <<ThisRef:32/?UI,Itemid:32/?UI,(byte_size(Text_UC)):32/?UI,(Text_UC)/binary, 0:(((8- ((4+byte_size(Text_UC)) band 16#7)) band 16#7))/unit:8,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((4+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8,(wxe_util:from_bool(IsCheckable)):32/?UI>>);
 prepend(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text,#wx_ref{type=SubmenuT,ref=SubmenuRef}, Options)
- when is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   ?CLASS(SubmenuT,wxMenu),
@@ -569,7 +569,7 @@ prepend(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text,#wx_ref{type=SubmenuT,ref=Su
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata().
 
 prependCheckItem(This,Itemid,Text)
- when is_record(This, wx_ref),is_integer(Itemid),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Itemid),?is_chardata(Text) ->
   prependCheckItem(This,Itemid,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuprependcheckitem">external documentation</a>.
@@ -577,7 +577,7 @@ prependCheckItem(This,Itemid,Text)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata(),
 	Option :: {'help', unicode:chardata()}.
 prependCheckItem(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
- when is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({help, Help}, Acc) ->   Help_UC = unicode:characters_to_binary([Help,0]),[<<1:32/?UI,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((0+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -591,7 +591,7 @@ prependCheckItem(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata().
 
 prependRadioItem(This,Itemid,Text)
- when is_record(This, wx_ref),is_integer(Itemid),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Itemid),?is_chardata(Text) ->
   prependRadioItem(This,Itemid,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmenu.html#wxmenuprependradioitem">external documentation</a>.
@@ -599,7 +599,7 @@ prependRadioItem(This,Itemid,Text)
 	This::wxMenu(), Itemid::integer(), Text::unicode:chardata(),
 	Option :: {'help', unicode:chardata()}.
 prependRadioItem(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Text, Options)
- when is_integer(Itemid),is_list(Text),is_list(Options) ->
+ when is_integer(Itemid),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxMenu),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({help, Help}, Acc) ->   Help_UC = unicode:characters_to_binary([Help,0]),[<<1:32/?UI,(byte_size(Help_UC)):32/?UI,(Help_UC)/binary, 0:(((8- ((0+byte_size(Help_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -640,7 +640,7 @@ remove(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ItemT,ref=ItemRef}) ->
 -spec setHelpString(This, Itemid, HelpString) -> 'ok' when
 	This::wxMenu(), Itemid::integer(), HelpString::unicode:chardata().
 setHelpString(#wx_ref{type=ThisT,ref=ThisRef},Itemid,HelpString)
- when is_integer(Itemid),is_list(HelpString) ->
+ when is_integer(Itemid),?is_chardata(HelpString) ->
   ?CLASS(ThisT,wxMenu),
   HelpString_UC = unicode:characters_to_binary([HelpString,0]),
   wxe_util:cast(?wxMenu_SetHelpString,
@@ -650,7 +650,7 @@ setHelpString(#wx_ref{type=ThisT,ref=ThisRef},Itemid,HelpString)
 -spec setLabel(This, Itemid, Label) -> 'ok' when
 	This::wxMenu(), Itemid::integer(), Label::unicode:chardata().
 setLabel(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Label)
- when is_integer(Itemid),is_list(Label) ->
+ when is_integer(Itemid),?is_chardata(Label) ->
   ?CLASS(ThisT,wxMenu),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:cast(?wxMenu_SetLabel,
@@ -660,7 +660,7 @@ setLabel(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Label)
 -spec setTitle(This, Title) -> 'ok' when
 	This::wxMenu(), Title::unicode:chardata().
 setTitle(#wx_ref{type=ThisT,ref=ThisRef},Title)
- when is_list(Title) ->
+ when ?is_chardata(Title) ->
   ?CLASS(ThisT,wxMenu),
   Title_UC = unicode:characters_to_binary([Title,0]),
   wxe_util:cast(?wxMenu_SetTitle,
diff --git a/lib/wx/src/gen/wxMenuBar.erl b/lib/wx/src/gen/wxMenuBar.erl
index bb5e7c7752..bb976fd0ba 100644
--- a/lib/wx/src/gen/wxMenuBar.erl
+++ b/lib/wx/src/gen/wxMenuBar.erl
@@ -98,7 +98,7 @@ new(Style)
 -spec append(This, Menu, Title) -> boolean() when
 	This::wxMenuBar(), Menu::wxMenu:wxMenu(), Title::unicode:chardata().
 append(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=MenuT,ref=MenuRef},Title)
- when is_list(Title) ->
+ when ?is_chardata(Title) ->
   ?CLASS(ThisT,wxMenuBar),
   ?CLASS(MenuT,wxMenu),
   Title_UC = unicode:characters_to_binary([Title,0]),
@@ -157,7 +157,7 @@ enableTop(#wx_ref{type=ThisT,ref=ThisRef},Pos,Flag)
 -spec findMenu(This, Title) -> integer() when
 	This::wxMenuBar(), Title::unicode:chardata().
 findMenu(#wx_ref{type=ThisT,ref=ThisRef},Title)
- when is_list(Title) ->
+ when ?is_chardata(Title) ->
   ?CLASS(ThisT,wxMenuBar),
   Title_UC = unicode:characters_to_binary([Title,0]),
   wxe_util:call(?wxMenuBar_FindMenu,
@@ -167,7 +167,7 @@ findMenu(#wx_ref{type=ThisT,ref=ThisRef},Title)
 -spec findMenuItem(This, MenuString, ItemString) -> integer() when
 	This::wxMenuBar(), MenuString::unicode:chardata(), ItemString::unicode:chardata().
 findMenuItem(#wx_ref{type=ThisT,ref=ThisRef},MenuString,ItemString)
- when is_list(MenuString),is_list(ItemString) ->
+ when ?is_chardata(MenuString),?is_chardata(ItemString) ->
   ?CLASS(ThisT,wxMenuBar),
   MenuString_UC = unicode:characters_to_binary([MenuString,0]),
   ItemString_UC = unicode:characters_to_binary([ItemString,0]),
@@ -239,7 +239,7 @@ getMenuCount(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec insert(This, Pos, Menu, Title) -> boolean() when
 	This::wxMenuBar(), Pos::integer(), Menu::wxMenu:wxMenu(), Title::unicode:chardata().
 insert(#wx_ref{type=ThisT,ref=ThisRef},Pos,#wx_ref{type=MenuT,ref=MenuRef},Title)
- when is_integer(Pos),is_list(Title) ->
+ when is_integer(Pos),?is_chardata(Title) ->
   ?CLASS(ThisT,wxMenuBar),
   ?CLASS(MenuT,wxMenu),
   Title_UC = unicode:characters_to_binary([Title,0]),
@@ -285,7 +285,7 @@ remove(#wx_ref{type=ThisT,ref=ThisRef},Pos)
 -spec replace(This, Pos, Menu, Title) -> wxMenu:wxMenu() when
 	This::wxMenuBar(), Pos::integer(), Menu::wxMenu:wxMenu(), Title::unicode:chardata().
 replace(#wx_ref{type=ThisT,ref=ThisRef},Pos,#wx_ref{type=MenuT,ref=MenuRef},Title)
- when is_integer(Pos),is_list(Title) ->
+ when is_integer(Pos),?is_chardata(Title) ->
   ?CLASS(ThisT,wxMenuBar),
   ?CLASS(MenuT,wxMenu),
   Title_UC = unicode:characters_to_binary([Title,0]),
@@ -296,7 +296,7 @@ replace(#wx_ref{type=ThisT,ref=ThisRef},Pos,#wx_ref{type=MenuT,ref=MenuRef},Titl
 -spec setHelpString(This, Itemid, HelpString) -> 'ok' when
 	This::wxMenuBar(), Itemid::integer(), HelpString::unicode:chardata().
 setHelpString(#wx_ref{type=ThisT,ref=ThisRef},Itemid,HelpString)
- when is_integer(Itemid),is_list(HelpString) ->
+ when is_integer(Itemid),?is_chardata(HelpString) ->
   ?CLASS(ThisT,wxMenuBar),
   HelpString_UC = unicode:characters_to_binary([HelpString,0]),
   wxe_util:cast(?wxMenuBar_SetHelpString,
@@ -306,7 +306,7 @@ setHelpString(#wx_ref{type=ThisT,ref=ThisRef},Itemid,HelpString)
 -spec setLabel(This, S) -> 'ok' when
 	This::wxMenuBar(), S::unicode:chardata().
 setLabel(#wx_ref{type=ThisT,ref=ThisRef},S)
- when is_list(S) ->
+ when ?is_chardata(S) ->
   ?CLASS(ThisT,wxMenuBar),
   S_UC = unicode:characters_to_binary([S,0]),
   wxe_util:cast(?wxMenuBar_SetLabel_1,
@@ -316,7 +316,7 @@ setLabel(#wx_ref{type=ThisT,ref=ThisRef},S)
 -spec setLabel(This, Itemid, Label) -> 'ok' when
 	This::wxMenuBar(), Itemid::integer(), Label::unicode:chardata().
 setLabel(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Label)
- when is_integer(Itemid),is_list(Label) ->
+ when is_integer(Itemid),?is_chardata(Label) ->
   ?CLASS(ThisT,wxMenuBar),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:cast(?wxMenuBar_SetLabel_2,
@@ -326,7 +326,7 @@ setLabel(#wx_ref{type=ThisT,ref=ThisRef},Itemid,Label)
 -spec setLabelTop(This, Pos, Label) -> 'ok' when
 	This::wxMenuBar(), Pos::integer(), Label::unicode:chardata().
 setLabelTop(#wx_ref{type=ThisT,ref=ThisRef},Pos,Label)
- when is_integer(Pos),is_list(Label) ->
+ when is_integer(Pos),?is_chardata(Label) ->
   ?CLASS(ThisT,wxMenuBar),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:cast(?wxMenuBar_SetLabelTop,
diff --git a/lib/wx/src/gen/wxMenuItem.erl b/lib/wx/src/gen/wxMenuItem.erl
index 324910d15d..2e0a1c756a 100644
--- a/lib/wx/src/gen/wxMenuItem.erl
+++ b/lib/wx/src/gen/wxMenuItem.erl
@@ -153,7 +153,7 @@ getLabel(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec getLabelFromText(Text) -> unicode:charlist() when
 	Text::unicode:chardata().
 getLabelFromText(Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxMenuItem_GetLabelFromText,
   <<(byte_size(Text_UC)):32/?UI,(Text_UC)/binary, 0:(((8- ((4+byte_size(Text_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -235,7 +235,7 @@ setBitmap(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=BitmapT,ref=BitmapRef}) -
 -spec setHelp(This, Str) -> 'ok' when
 	This::wxMenuItem(), Str::unicode:chardata().
 setHelp(#wx_ref{type=ThisT,ref=ThisRef},Str)
- when is_list(Str) ->
+ when ?is_chardata(Str) ->
   ?CLASS(ThisT,wxMenuItem),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxMenuItem_SetHelp,
@@ -263,7 +263,7 @@ setSubMenu(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=MenuT,ref=MenuRef}) ->
 -spec setText(This, Str) -> 'ok' when
 	This::wxMenuItem(), Str::unicode:chardata().
 setText(#wx_ref{type=ThisT,ref=ThisRef},Str)
- when is_list(Str) ->
+ when ?is_chardata(Str) ->
   ?CLASS(ThisT,wxMenuItem),
   Str_UC = unicode:characters_to_binary([Str,0]),
   wxe_util:cast(?wxMenuItem_SetText,
diff --git a/lib/wx/src/gen/wxMessageDialog.erl b/lib/wx/src/gen/wxMessageDialog.erl
index 2694d07f5e..46a832198c 100644
--- a/lib/wx/src/gen/wxMessageDialog.erl
+++ b/lib/wx/src/gen/wxMessageDialog.erl
@@ -93,7 +93,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 	Parent::wxWindow:wxWindow(), Message::unicode:chardata().
 
 new(Parent,Message)
- when is_record(Parent, wx_ref),is_list(Message) ->
+ when is_record(Parent, wx_ref),?is_chardata(Message) ->
   new(Parent,Message, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmessagedialog.html#wxmessagedialogwxmessagedialog">external documentation</a>.
@@ -103,7 +103,7 @@ new(Parent,Message)
 		 | {'style', integer()}
 		 | {'pos', {X::integer(), Y::integer()}}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Message, Options)
- when is_list(Message),is_list(Options) ->
+ when ?is_chardata(Message),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Message_UC = unicode:characters_to_binary([Message,0]),
   MOpts = fun({caption, Caption}, Acc) ->   Caption_UC = unicode:characters_to_binary([Caption,0]),[<<1:32/?UI,(byte_size(Caption_UC)):32/?UI,(Caption_UC)/binary, 0:(((8- ((0+byte_size(Caption_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
diff --git a/lib/wx/src/gen/wxMiniFrame.erl b/lib/wx/src/gen/wxMiniFrame.erl
index 8b428a0980..a13ff18d9e 100644
--- a/lib/wx/src/gen/wxMiniFrame.erl
+++ b/lib/wx/src/gen/wxMiniFrame.erl
@@ -101,7 +101,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 new(Parent,Id,Title)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   new(Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxminiframe.html#wxminiframewxminiframe">external documentation</a>.
@@ -111,7 +111,7 @@ new(Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -127,7 +127,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
 	This::wxMiniFrame(), Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata().
 
 create(This,Parent,Id,Title)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Title) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title) ->
   create(This,Parent,Id,Title, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxminiframe.html#wxminiframecreate">external documentation</a>.
@@ -137,7 +137,7 @@ create(This,Parent,Id,Title)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Title, Options)
- when is_integer(Id),is_list(Title),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_list(Options) ->
   ?CLASS(ThisT,wxMiniFrame),
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
diff --git a/lib/wx/src/gen/wxMultiChoiceDialog.erl b/lib/wx/src/gen/wxMultiChoiceDialog.erl
index 1f67b9dfae..9b3129cf53 100644
--- a/lib/wx/src/gen/wxMultiChoiceDialog.erl
+++ b/lib/wx/src/gen/wxMultiChoiceDialog.erl
@@ -99,7 +99,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Message::unicode:chardata(), Caption::unicode:chardata(), Choices::[unicode:chardata()].
 
 new(Parent,Message,Caption,Choices)
- when is_record(Parent, wx_ref),is_list(Message),is_list(Caption),is_list(Choices) ->
+ when is_record(Parent, wx_ref),?is_chardata(Message),?is_chardata(Caption),is_list(Choices) ->
   new(Parent,Message,Caption,Choices, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxmultichoicedialog.html#wxmultichoicedialogwxmultichoicedialog">external documentation</a>.
@@ -108,7 +108,7 @@ new(Parent,Message,Caption,Choices)
 	Option :: {'style', integer()}
 		 | {'pos', {X::integer(), Y::integer()}}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Message,Caption,Choices, Options)
- when is_list(Message),is_list(Caption),is_list(Choices),is_list(Options) ->
+ when ?is_chardata(Message),?is_chardata(Caption),is_list(Choices),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Message_UC = unicode:characters_to_binary([Message,0]),
   Caption_UC = unicode:characters_to_binary([Caption,0]),
diff --git a/lib/wx/src/gen/wxNotebook.erl b/lib/wx/src/gen/wxNotebook.erl
index 436c712d29..3a65cf54cd 100644
--- a/lib/wx/src/gen/wxNotebook.erl
+++ b/lib/wx/src/gen/wxNotebook.erl
@@ -120,7 +120,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Winid, Options)
 	This::wxNotebook(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 addPage(This,Page,Text)
- when is_record(This, wx_ref),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_record(Page, wx_ref),?is_chardata(Text) ->
   addPage(This,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxnotebook.html#wxnotebookaddpage">external documentation</a>.
@@ -129,7 +129,7 @@ addPage(This,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 addPage(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxNotebook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -312,7 +312,7 @@ hitTest(#wx_ref{type=ThisT,ref=ThisRef},{PtX,PtY})
 	This::wxNotebook(), Position::integer(), Win::wxWindow:wxWindow(), StrText::unicode:chardata().
 
 insertPage(This,Position,Win,StrText)
- when is_record(This, wx_ref),is_integer(Position),is_record(Win, wx_ref),is_list(StrText) ->
+ when is_record(This, wx_ref),is_integer(Position),is_record(Win, wx_ref),?is_chardata(StrText) ->
   insertPage(This,Position,Win,StrText, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxnotebook.html#wxnotebookinsertpage">external documentation</a>.
@@ -321,7 +321,7 @@ insertPage(This,Position,Win,StrText)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 insertPage(#wx_ref{type=ThisT,ref=ThisRef},Position,#wx_ref{type=WinT,ref=WinRef},StrText, Options)
- when is_integer(Position),is_list(StrText),is_list(Options) ->
+ when is_integer(Position),?is_chardata(StrText),is_list(Options) ->
   ?CLASS(ThisT,wxNotebook),
   ?CLASS(WinT,wxWindow),
   StrText_UC = unicode:characters_to_binary([StrText,0]),
@@ -372,7 +372,7 @@ setPageImage(#wx_ref{type=ThisT,ref=ThisRef},NPage,NImage)
 -spec setPageText(This, NPage, StrText) -> boolean() when
 	This::wxNotebook(), NPage::integer(), StrText::unicode:chardata().
 setPageText(#wx_ref{type=ThisT,ref=ThisRef},NPage,StrText)
- when is_integer(NPage),is_list(StrText) ->
+ when is_integer(NPage),?is_chardata(StrText) ->
   ?CLASS(ThisT,wxNotebook),
   StrText_UC = unicode:characters_to_binary([StrText,0]),
   wxe_util:call(?wxNotebook_SetPageText,
diff --git a/lib/wx/src/gen/wxPasswordEntryDialog.erl b/lib/wx/src/gen/wxPasswordEntryDialog.erl
index 2aebd9e69e..5913834bb8 100644
--- a/lib/wx/src/gen/wxPasswordEntryDialog.erl
+++ b/lib/wx/src/gen/wxPasswordEntryDialog.erl
@@ -95,7 +95,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 	Parent::wxWindow:wxWindow(), Message::unicode:chardata().
 
 new(Parent,Message)
- when is_record(Parent, wx_ref),is_list(Message) ->
+ when is_record(Parent, wx_ref),?is_chardata(Message) ->
   new(Parent,Message, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxpasswordentrydialog.html#wxpasswordentrydialogwxpasswordentrydialog">external documentation</a>.
@@ -106,7 +106,7 @@ new(Parent,Message)
 		 | {'style', integer()}
 		 | {'pos', {X::integer(), Y::integer()}}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Message, Options)
- when is_list(Message),is_list(Options) ->
+ when ?is_chardata(Message),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Message_UC = unicode:characters_to_binary([Message,0]),
   MOpts = fun({caption, Caption}, Acc) ->   Caption_UC = unicode:characters_to_binary([Caption,0]),[<<1:32/?UI,(byte_size(Caption_UC)):32/?UI,(Caption_UC)/binary, 0:(((8- ((0+byte_size(Caption_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
diff --git a/lib/wx/src/gen/wxPrintData.erl b/lib/wx/src/gen/wxPrintData.erl
index 6b6b678adf..b6815da90b 100644
--- a/lib/wx/src/gen/wxPrintData.erl
+++ b/lib/wx/src/gen/wxPrintData.erl
@@ -205,7 +205,7 @@ setPaperId(#wx_ref{type=ThisT,ref=ThisRef},SizeId)
 -spec setPrinterName(This, Name) -> 'ok' when
 	This::wxPrintData(), Name::unicode:chardata().
 setPrinterName(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxPrintData),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:cast(?wxPrintData_SetPrinterName,
diff --git a/lib/wx/src/gen/wxPrinter.erl b/lib/wx/src/gen/wxPrinter.erl
index b9fb1c07bd..bdca37b4a8 100644
--- a/lib/wx/src/gen/wxPrinter.erl
+++ b/lib/wx/src/gen/wxPrinter.erl
@@ -122,7 +122,7 @@ printDialog(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef})
 -spec reportError(This, Parent, Printout, Message) -> 'ok' when
 	This::wxPrinter(), Parent::wxWindow:wxWindow(), Printout::wxPrintout:wxPrintout(), Message::unicode:chardata().
 reportError(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},#wx_ref{type=PrintoutT,ref=PrintoutRef},Message)
- when is_list(Message) ->
+ when ?is_chardata(Message) ->
   ?CLASS(ThisT,wxPrinter),
   ?CLASS(ParentT,wxWindow),
   ?CLASS(PrintoutT,wxPrintout),
diff --git a/lib/wx/src/gen/wxProgressDialog.erl b/lib/wx/src/gen/wxProgressDialog.erl
index a05755561e..cadb8497dd 100644
--- a/lib/wx/src/gen/wxProgressDialog.erl
+++ b/lib/wx/src/gen/wxProgressDialog.erl
@@ -93,7 +93,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 	Title::unicode:chardata(), Message::unicode:chardata().
 
 new(Title,Message)
- when is_list(Title),is_list(Message) ->
+ when ?is_chardata(Title),?is_chardata(Message) ->
   new(Title,Message, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxprogressdialog.html#wxprogressdialogwxprogressdialog">external documentation</a>.
@@ -103,7 +103,7 @@ new(Title,Message)
 		 | {'parent', wxWindow:wxWindow()}
 		 | {'style', integer()}.
 new(Title,Message, Options)
- when is_list(Title),is_list(Message),is_list(Options) ->
+ when ?is_chardata(Title),?is_chardata(Message),is_list(Options) ->
   Title_UC = unicode:characters_to_binary([Title,0]),
   Message_UC = unicode:characters_to_binary([Message,0]),
   MOpts = fun({maximum, Maximum}, Acc) -> [<<1:32/?UI,Maximum:32/?UI>>|Acc];
diff --git a/lib/wx/src/gen/wxRadioBox.erl b/lib/wx/src/gen/wxRadioBox.erl
index 772ee00115..34e7f038ec 100644
--- a/lib/wx/src/gen/wxRadioBox.erl
+++ b/lib/wx/src/gen/wxRadioBox.erl
@@ -87,7 +87,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 	Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata(), Pos::{X::integer(), Y::integer()}, Size::{W::integer(), H::integer()}, Choices::[unicode:chardata()].
 
 new(Parent,Id,Title,Pos={PosX,PosY},Size={SizeW,SizeH},Choices)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices) ->
   new(Parent,Id,Title,Pos,Size,Choices, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxradiobox.html#wxradioboxwxradiobox">external documentation</a>.
@@ -97,7 +97,7 @@ new(Parent,Id,Title,Pos={PosX,PosY},Size={SizeW,SizeH},Choices)
 		 | {'style', integer()}
 		 | {'val', wx:wx_object()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title,{PosX,PosY},{SizeW,SizeH},Choices, Options)
- when is_integer(Id),is_list(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
   Choices_UCA = [unicode:characters_to_binary([ChoicesTemp,0]) || 
@@ -115,7 +115,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Title,{PosX,PosY},{SizeW,SizeH},Choic
 	This::wxRadioBox(), Parent::wxWindow:wxWindow(), Id::integer(), Title::unicode:chardata(), Pos::{X::integer(), Y::integer()}, Size::{W::integer(), H::integer()}, Choices::[unicode:chardata()].
 
 create(This,Parent,Id,Title,Pos={PosX,PosY},Size={SizeW,SizeH},Choices)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices) ->
   create(This,Parent,Id,Title,Pos,Size,Choices, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxradiobox.html#wxradioboxcreate">external documentation</a>.
@@ -125,7 +125,7 @@ create(This,Parent,Id,Title,Pos={PosX,PosY},Size={SizeW,SizeH},Choices)
 		 | {'style', integer()}
 		 | {'val', wx:wx_object()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Title,{PosX,PosY},{SizeW,SizeH},Choices, Options)
- when is_integer(Id),is_list(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Title),is_integer(PosX),is_integer(PosY),is_integer(SizeW),is_integer(SizeH),is_list(Choices),is_list(Options) ->
   ?CLASS(ThisT,wxRadioBox),
   ?CLASS(ParentT,wxWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
@@ -320,7 +320,7 @@ isItemShown(#wx_ref{type=ThisT,ref=ThisRef},N)
 -spec setItemHelpText(This, N, HelpText) -> 'ok' when
 	This::wxRadioBox(), N::integer(), HelpText::unicode:chardata().
 setItemHelpText(#wx_ref{type=ThisT,ref=ThisRef},N,HelpText)
- when is_integer(N),is_list(HelpText) ->
+ when is_integer(N),?is_chardata(HelpText) ->
   ?CLASS(ThisT,wxRadioBox),
   HelpText_UC = unicode:characters_to_binary([HelpText,0]),
   wxe_util:cast(?wxRadioBox_SetItemHelpText,
@@ -330,7 +330,7 @@ setItemHelpText(#wx_ref{type=ThisT,ref=ThisRef},N,HelpText)
 -spec setItemToolTip(This, Item, Text) -> 'ok' when
 	This::wxRadioBox(), Item::integer(), Text::unicode:chardata().
 setItemToolTip(#wx_ref{type=ThisT,ref=ThisRef},Item,Text)
- when is_integer(Item),is_list(Text) ->
+ when is_integer(Item),?is_chardata(Text) ->
   ?CLASS(ThisT,wxRadioBox),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxRadioBox_SetItemToolTip,
diff --git a/lib/wx/src/gen/wxRadioButton.erl b/lib/wx/src/gen/wxRadioButton.erl
index 759bb64364..f90afc82a5 100644
--- a/lib/wx/src/gen/wxRadioButton.erl
+++ b/lib/wx/src/gen/wxRadioButton.erl
@@ -90,7 +90,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 new(Parent,Id,Label)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   new(Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxradiobutton.html#wxradiobuttonwxradiobutton">external documentation</a>.
@@ -101,7 +101,7 @@ new(Parent,Id,Label)
 		 | {'style', integer()}
 		 | {'validator', wx:wx_object()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -118,7 +118,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
 	This::wxRadioButton(), Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 create(This,Parent,Id,Label)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   create(This,Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxradiobutton.html#wxradiobuttoncreate">external documentation</a>.
@@ -129,7 +129,7 @@ create(This,Parent,Id,Label)
 		 | {'style', integer()}
 		 | {'validator', wx:wx_object()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxRadioButton),
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
diff --git a/lib/wx/src/gen/wxSingleChoiceDialog.erl b/lib/wx/src/gen/wxSingleChoiceDialog.erl
index eb3d556a47..d5e4977abc 100644
--- a/lib/wx/src/gen/wxSingleChoiceDialog.erl
+++ b/lib/wx/src/gen/wxSingleChoiceDialog.erl
@@ -99,7 +99,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Message::unicode:chardata(), Caption::unicode:chardata(), Choices::[unicode:chardata()].
 
 new(Parent,Message,Caption,Choices)
- when is_record(Parent, wx_ref),is_list(Message),is_list(Caption),is_list(Choices) ->
+ when is_record(Parent, wx_ref),?is_chardata(Message),?is_chardata(Caption),is_list(Choices) ->
   new(Parent,Message,Caption,Choices, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxsinglechoicedialog.html#wxsinglechoicedialogwxsinglechoicedialog">external documentation</a>.
@@ -108,7 +108,7 @@ new(Parent,Message,Caption,Choices)
 	Option :: {'style', integer()}
 		 | {'pos', {X::integer(), Y::integer()}}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Message,Caption,Choices, Options)
- when is_list(Message),is_list(Caption),is_list(Choices),is_list(Options) ->
+ when ?is_chardata(Message),?is_chardata(Caption),is_list(Choices),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Message_UC = unicode:characters_to_binary([Message,0]),
   Caption_UC = unicode:characters_to_binary([Caption,0]),
diff --git a/lib/wx/src/gen/wxSpinCtrl.erl b/lib/wx/src/gen/wxSpinCtrl.erl
index 867787f3e3..a1d359b117 100644
--- a/lib/wx/src/gen/wxSpinCtrl.erl
+++ b/lib/wx/src/gen/wxSpinCtrl.erl
@@ -172,7 +172,7 @@ setValue(#wx_ref{type=ThisT,ref=ThisRef},Value)
   wxe_util:cast(?wxSpinCtrl_SetValue_1_0,
   <<ThisRef:32/?UI,Value:32/?UI>>);
 setValue(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxSpinCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxSpinCtrl_SetValue_1_1,
diff --git a/lib/wx/src/gen/wxStaticBox.erl b/lib/wx/src/gen/wxStaticBox.erl
index 9bc4cae9cc..8a789d2d62 100644
--- a/lib/wx/src/gen/wxStaticBox.erl
+++ b/lib/wx/src/gen/wxStaticBox.erl
@@ -90,7 +90,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 new(Parent,Id,Label)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   new(Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstaticbox.html#wxstaticboxwxstaticbox">external documentation</a>.
@@ -100,7 +100,7 @@ new(Parent,Id,Label)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -116,7 +116,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
 	This::wxStaticBox(), Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 create(This,Parent,Id,Label)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   create(This,Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstaticbox.html#wxstaticboxcreate">external documentation</a>.
@@ -126,7 +126,7 @@ create(This,Parent,Id,Label)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxStaticBox),
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
diff --git a/lib/wx/src/gen/wxStaticText.erl b/lib/wx/src/gen/wxStaticText.erl
index 0b2452adcb..83e83305fb 100644
--- a/lib/wx/src/gen/wxStaticText.erl
+++ b/lib/wx/src/gen/wxStaticText.erl
@@ -90,7 +90,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 new(Parent,Id,Label)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   new(Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstatictext.html#wxstatictextwxstatictext">external documentation</a>.
@@ -100,7 +100,7 @@ new(Parent,Id,Label)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -116,7 +116,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
 	This::wxStaticText(), Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 create(This,Parent,Id,Label)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   create(This,Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstatictext.html#wxstatictextcreate">external documentation</a>.
@@ -126,7 +126,7 @@ create(This,Parent,Id,Label)
 		 | {'size', {W::integer(), H::integer()}}
 		 | {'style', integer()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxStaticText),
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
@@ -150,7 +150,7 @@ getLabel(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setLabel(This, Label) -> 'ok' when
 	This::wxStaticText(), Label::unicode:chardata().
 setLabel(#wx_ref{type=ThisT,ref=ThisRef},Label)
- when is_list(Label) ->
+ when ?is_chardata(Label) ->
   ?CLASS(ThisT,wxStaticText),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:cast(?wxStaticText_SetLabel,
diff --git a/lib/wx/src/gen/wxStatusBar.erl b/lib/wx/src/gen/wxStatusBar.erl
index 1fbb9c838d..db86136f5a 100644
--- a/lib/wx/src/gen/wxStatusBar.erl
+++ b/lib/wx/src/gen/wxStatusBar.erl
@@ -198,7 +198,7 @@ popStatusText(#wx_ref{type=ThisT,ref=ThisRef}, Options)
 	This::wxStatusBar(), Text::unicode:chardata().
 
 pushStatusText(This,Text)
- when is_record(This, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),?is_chardata(Text) ->
   pushStatusText(This,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstatusbar.html#wxstatusbarpushstatustext">external documentation</a>.
@@ -206,7 +206,7 @@ pushStatusText(This,Text)
 	This::wxStatusBar(), Text::unicode:chardata(),
 	Option :: {'number', integer()}.
 pushStatusText(#wx_ref{type=ThisT,ref=ThisRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxStatusBar),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({number, Number}, Acc) -> [<<1:32/?UI,Number:32/?UI>>|Acc];
@@ -251,7 +251,7 @@ setMinHeight(#wx_ref{type=ThisT,ref=ThisRef},Height)
 	This::wxStatusBar(), Text::unicode:chardata().
 
 setStatusText(This,Text)
- when is_record(This, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),?is_chardata(Text) ->
   setStatusText(This,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstatusbar.html#wxstatusbarsetstatustext">external documentation</a>.
@@ -259,7 +259,7 @@ setStatusText(This,Text)
 	This::wxStatusBar(), Text::unicode:chardata(),
 	Option :: {'number', integer()}.
 setStatusText(#wx_ref{type=ThisT,ref=ThisRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxStatusBar),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({number, Number}, Acc) -> [<<1:32/?UI,Number:32/?UI>>|Acc];
diff --git a/lib/wx/src/gen/wxStyledTextCtrl.erl b/lib/wx/src/gen/wxStyledTextCtrl.erl
index e95688ddc6..c684141224 100644
--- a/lib/wx/src/gen/wxStyledTextCtrl.erl
+++ b/lib/wx/src/gen/wxStyledTextCtrl.erl
@@ -246,7 +246,7 @@ create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef}, Opti
 -spec addText(This, Text) -> 'ok' when
 	This::wxStyledTextCtrl(), Text::unicode:chardata().
 addText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxStyledTextCtrl_AddText,
@@ -265,7 +265,7 @@ addStyledText(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=DataT,ref=DataRef}) -
 -spec insertText(This, Pos, Text) -> 'ok' when
 	This::wxStyledTextCtrl(), Pos::integer(), Text::unicode:chardata().
 insertText(#wx_ref{type=ThisT,ref=ThisRef},Pos,Text)
- when is_integer(Pos),is_list(Text) ->
+ when is_integer(Pos),?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxStyledTextCtrl_InsertText,
@@ -823,7 +823,7 @@ styleSetSize(#wx_ref{type=ThisT,ref=ThisRef},Style,SizePoints)
 -spec styleSetFaceName(This, Style, FontName) -> 'ok' when
 	This::wxStyledTextCtrl(), Style::integer(), FontName::unicode:chardata().
 styleSetFaceName(#wx_ref{type=ThisT,ref=ThisRef},Style,FontName)
- when is_integer(Style),is_list(FontName) ->
+ when is_integer(Style),?is_chardata(FontName) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   FontName_UC = unicode:characters_to_binary([FontName,0]),
   wxe_util:cast(?wxStyledTextCtrl_StyleSetFaceName,
@@ -982,7 +982,7 @@ setCaretPeriod(#wx_ref{type=ThisT,ref=ThisRef},PeriodMilliseconds)
 -spec setWordChars(This, Characters) -> 'ok' when
 	This::wxStyledTextCtrl(), Characters::unicode:chardata().
 setWordChars(#wx_ref{type=ThisT,ref=ThisRef},Characters)
- when is_list(Characters) ->
+ when ?is_chardata(Characters) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Characters_UC = unicode:characters_to_binary([Characters,0]),
   wxe_util:cast(?wxStyledTextCtrl_SetWordChars,
@@ -1130,7 +1130,7 @@ setCaretLineBackground(#wx_ref{type=ThisT,ref=ThisRef},Back)
 -spec autoCompShow(This, LenEntered, ItemList) -> 'ok' when
 	This::wxStyledTextCtrl(), LenEntered::integer(), ItemList::unicode:chardata().
 autoCompShow(#wx_ref{type=ThisT,ref=ThisRef},LenEntered,ItemList)
- when is_integer(LenEntered),is_list(ItemList) ->
+ when is_integer(LenEntered),?is_chardata(ItemList) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   ItemList_UC = unicode:characters_to_binary([ItemList,0]),
   wxe_util:cast(?wxStyledTextCtrl_AutoCompShow,
@@ -1172,7 +1172,7 @@ autoCompComplete(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec autoCompStops(This, CharacterSet) -> 'ok' when
 	This::wxStyledTextCtrl(), CharacterSet::unicode:chardata().
 autoCompStops(#wx_ref{type=ThisT,ref=ThisRef},CharacterSet)
- when is_list(CharacterSet) ->
+ when ?is_chardata(CharacterSet) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   CharacterSet_UC = unicode:characters_to_binary([CharacterSet,0]),
   wxe_util:cast(?wxStyledTextCtrl_AutoCompStops,
@@ -1199,7 +1199,7 @@ autoCompGetSeparator(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec autoCompSelect(This, Text) -> 'ok' when
 	This::wxStyledTextCtrl(), Text::unicode:chardata().
 autoCompSelect(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxStyledTextCtrl_AutoCompSelect,
@@ -1226,7 +1226,7 @@ autoCompGetCancelAtStart(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec autoCompSetFillUps(This, CharacterSet) -> 'ok' when
 	This::wxStyledTextCtrl(), CharacterSet::unicode:chardata().
 autoCompSetFillUps(#wx_ref{type=ThisT,ref=ThisRef},CharacterSet)
- when is_list(CharacterSet) ->
+ when ?is_chardata(CharacterSet) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   CharacterSet_UC = unicode:characters_to_binary([CharacterSet,0]),
   wxe_util:cast(?wxStyledTextCtrl_AutoCompSetFillUps,
@@ -1270,7 +1270,7 @@ autoCompGetIgnoreCase(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec userListShow(This, ListType, ItemList) -> 'ok' when
 	This::wxStyledTextCtrl(), ListType::integer(), ItemList::unicode:chardata().
 userListShow(#wx_ref{type=ThisT,ref=ThisRef},ListType,ItemList)
- when is_integer(ListType),is_list(ItemList) ->
+ when is_integer(ListType),?is_chardata(ItemList) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   ItemList_UC = unicode:characters_to_binary([ItemList,0]),
   wxe_util:cast(?wxStyledTextCtrl_UserListShow,
@@ -1615,7 +1615,7 @@ getPrintColourMode(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxStyledTextCtrl(), MinPos::integer(), MaxPos::integer(), Text::unicode:chardata().
 
 findText(This,MinPos,MaxPos,Text)
- when is_record(This, wx_ref),is_integer(MinPos),is_integer(MaxPos),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(MinPos),is_integer(MaxPos),?is_chardata(Text) ->
   findText(This,MinPos,MaxPos,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstyledtextctrl.html#wxstyledtextctrlfindtext">external documentation</a>.
@@ -1623,7 +1623,7 @@ findText(This,MinPos,MaxPos,Text)
 	This::wxStyledTextCtrl(), MinPos::integer(), MaxPos::integer(), Text::unicode:chardata(),
 	Option :: {'flags', integer()}.
 findText(#wx_ref{type=ThisT,ref=ThisRef},MinPos,MaxPos,Text, Options)
- when is_integer(MinPos),is_integer(MaxPos),is_list(Text),is_list(Options) ->
+ when is_integer(MinPos),is_integer(MaxPos),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({flags, Flags}, Acc) -> [<<1:32/?UI,Flags:32/?UI>>|Acc];
@@ -1784,7 +1784,7 @@ ensureCaretVisible(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec replaceSelection(This, Text) -> 'ok' when
 	This::wxStyledTextCtrl(), Text::unicode:chardata().
 replaceSelection(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxStyledTextCtrl_ReplaceSelection,
@@ -1867,7 +1867,7 @@ clear(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setText(This, Text) -> 'ok' when
 	This::wxStyledTextCtrl(), Text::unicode:chardata().
 setText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxStyledTextCtrl_SetText,
@@ -1952,7 +1952,7 @@ getTargetEnd(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec replaceTarget(This, Text) -> integer() when
 	This::wxStyledTextCtrl(), Text::unicode:chardata().
 replaceTarget(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxStyledTextCtrl_ReplaceTarget,
@@ -1962,7 +1962,7 @@ replaceTarget(#wx_ref{type=ThisT,ref=ThisRef},Text)
 -spec searchInTarget(This, Text) -> integer() when
 	This::wxStyledTextCtrl(), Text::unicode:chardata().
 searchInTarget(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxStyledTextCtrl_SearchInTarget,
@@ -1989,7 +1989,7 @@ getSearchFlags(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec callTipShow(This, Pos, Definition) -> 'ok' when
 	This::wxStyledTextCtrl(), Pos::integer(), Definition::unicode:chardata().
 callTipShow(#wx_ref{type=ThisT,ref=ThisRef},Pos,Definition)
- when is_integer(Pos),is_list(Definition) ->
+ when is_integer(Pos),?is_chardata(Definition) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Definition_UC = unicode:characters_to_binary([Definition,0]),
   wxe_util:cast(?wxStyledTextCtrl_CallTipShow,
@@ -2383,7 +2383,7 @@ getScrollWidth(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec textWidth(This, Style, Text) -> integer() when
 	This::wxStyledTextCtrl(), Style::integer(), Text::unicode:chardata().
 textWidth(#wx_ref{type=ThisT,ref=ThisRef},Style,Text)
- when is_integer(Style),is_list(Text) ->
+ when is_integer(Style),?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxStyledTextCtrl_TextWidth,
@@ -2427,7 +2427,7 @@ getUseVerticalScrollBar(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec appendText(This, Text) -> 'ok' when
 	This::wxStyledTextCtrl(), Text::unicode:chardata().
 appendText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxStyledTextCtrl_AppendText,
@@ -3074,7 +3074,7 @@ searchAnchor(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec searchNext(This, Flags, Text) -> integer() when
 	This::wxStyledTextCtrl(), Flags::integer(), Text::unicode:chardata().
 searchNext(#wx_ref{type=ThisT,ref=ThisRef},Flags,Text)
- when is_integer(Flags),is_list(Text) ->
+ when is_integer(Flags),?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxStyledTextCtrl_SearchNext,
@@ -3084,7 +3084,7 @@ searchNext(#wx_ref{type=ThisT,ref=ThisRef},Flags,Text)
 -spec searchPrev(This, Flags, Text) -> integer() when
 	This::wxStyledTextCtrl(), Flags::integer(), Text::unicode:chardata().
 searchPrev(#wx_ref{type=ThisT,ref=ThisRef},Flags,Text)
- when is_integer(Flags),is_list(Text) ->
+ when is_integer(Flags),?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:call(?wxStyledTextCtrl_SearchPrev,
@@ -3415,7 +3415,7 @@ copyRange(#wx_ref{type=ThisT,ref=ThisRef},Start,End)
 -spec copyText(This, Length, Text) -> 'ok' when
 	This::wxStyledTextCtrl(), Length::integer(), Text::unicode:chardata().
 copyText(#wx_ref{type=ThisT,ref=ThisRef},Length,Text)
- when is_integer(Length),is_list(Text) ->
+ when is_integer(Length),?is_chardata(Text) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxStyledTextCtrl_CopyText,
@@ -3578,7 +3578,7 @@ wordRightEndExtend(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setWhitespaceChars(This, Characters) -> 'ok' when
 	This::wxStyledTextCtrl(), Characters::unicode:chardata().
 setWhitespaceChars(#wx_ref{type=ThisT,ref=ThisRef},Characters)
- when is_list(Characters) ->
+ when ?is_chardata(Characters) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Characters_UC = unicode:characters_to_binary([Characters,0]),
   wxe_util:cast(?wxStyledTextCtrl_SetWhitespaceChars,
@@ -3731,7 +3731,7 @@ colourise(#wx_ref{type=ThisT,ref=ThisRef},Start,End)
 -spec setProperty(This, Key, Value) -> 'ok' when
 	This::wxStyledTextCtrl(), Key::unicode:chardata(), Value::unicode:chardata().
 setProperty(#wx_ref{type=ThisT,ref=ThisRef},Key,Value)
- when is_list(Key),is_list(Value) ->
+ when ?is_chardata(Key),?is_chardata(Value) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Key_UC = unicode:characters_to_binary([Key,0]),
   Value_UC = unicode:characters_to_binary([Value,0]),
@@ -3742,7 +3742,7 @@ setProperty(#wx_ref{type=ThisT,ref=ThisRef},Key,Value)
 -spec setKeyWords(This, KeywordSet, KeyWords) -> 'ok' when
 	This::wxStyledTextCtrl(), KeywordSet::integer(), KeyWords::unicode:chardata().
 setKeyWords(#wx_ref{type=ThisT,ref=ThisRef},KeywordSet,KeyWords)
- when is_integer(KeywordSet),is_list(KeyWords) ->
+ when is_integer(KeywordSet),?is_chardata(KeyWords) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   KeyWords_UC = unicode:characters_to_binary([KeyWords,0]),
   wxe_util:cast(?wxStyledTextCtrl_SetKeyWords,
@@ -3752,7 +3752,7 @@ setKeyWords(#wx_ref{type=ThisT,ref=ThisRef},KeywordSet,KeyWords)
 -spec setLexerLanguage(This, Language) -> 'ok' when
 	This::wxStyledTextCtrl(), Language::unicode:chardata().
 setLexerLanguage(#wx_ref{type=ThisT,ref=ThisRef},Language)
- when is_list(Language) ->
+ when ?is_chardata(Language) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Language_UC = unicode:characters_to_binary([Language,0]),
   wxe_util:cast(?wxStyledTextCtrl_SetLexerLanguage,
@@ -3762,7 +3762,7 @@ setLexerLanguage(#wx_ref{type=ThisT,ref=ThisRef},Language)
 -spec getProperty(This, Key) -> unicode:charlist() when
 	This::wxStyledTextCtrl(), Key::unicode:chardata().
 getProperty(#wx_ref{type=ThisT,ref=ThisRef},Key)
- when is_list(Key) ->
+ when ?is_chardata(Key) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Key_UC = unicode:characters_to_binary([Key,0]),
   wxe_util:call(?wxStyledTextCtrl_GetProperty,
@@ -3788,7 +3788,7 @@ getCurrentLine(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec styleSetSpec(This, StyleNum, Spec) -> 'ok' when
 	This::wxStyledTextCtrl(), StyleNum::integer(), Spec::unicode:chardata().
 styleSetSpec(#wx_ref{type=ThisT,ref=ThisRef},StyleNum,Spec)
- when is_integer(StyleNum),is_list(Spec) ->
+ when is_integer(StyleNum),?is_chardata(Spec) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Spec_UC = unicode:characters_to_binary([Spec,0]),
   wxe_util:cast(?wxStyledTextCtrl_StyleSetSpec,
@@ -3809,7 +3809,7 @@ styleSetFont(#wx_ref{type=ThisT,ref=ThisRef},StyleNum,#wx_ref{type=FontT,ref=Fon
 	This::wxStyledTextCtrl(), StyleNum::integer(), Size::integer(), FaceName::unicode:chardata(), Bold::boolean(), Italic::boolean(), Underline::boolean().
 
 styleSetFontAttr(This,StyleNum,Size,FaceName,Bold,Italic,Underline)
- when is_record(This, wx_ref),is_integer(StyleNum),is_integer(Size),is_list(FaceName),is_boolean(Bold),is_boolean(Italic),is_boolean(Underline) ->
+ when is_record(This, wx_ref),is_integer(StyleNum),is_integer(Size),?is_chardata(FaceName),is_boolean(Bold),is_boolean(Italic),is_boolean(Underline) ->
   styleSetFontAttr(This,StyleNum,Size,FaceName,Bold,Italic,Underline, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxstyledtextctrl.html#wxstyledtextctrlstylesetfontattr">external documentation</a>.
@@ -3818,7 +3818,7 @@ styleSetFontAttr(This,StyleNum,Size,FaceName,Bold,Italic,Underline)
 	This::wxStyledTextCtrl(), StyleNum::integer(), Size::integer(), FaceName::unicode:chardata(), Bold::boolean(), Italic::boolean(), Underline::boolean(),
 	Option :: {'encoding', wx:wx_enum()}.
 styleSetFontAttr(#wx_ref{type=ThisT,ref=ThisRef},StyleNum,Size,FaceName,Bold,Italic,Underline, Options)
- when is_integer(StyleNum),is_integer(Size),is_list(FaceName),is_boolean(Bold),is_boolean(Italic),is_boolean(Underline),is_list(Options) ->
+ when is_integer(StyleNum),is_integer(Size),?is_chardata(FaceName),is_boolean(Bold),is_boolean(Italic),is_boolean(Underline),is_list(Options) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   FaceName_UC = unicode:characters_to_binary([FaceName,0]),
   MOpts = fun({encoding, Encoding}, Acc) -> [<<1:32/?UI,Encoding:32/?UI>>|Acc];
@@ -3938,7 +3938,7 @@ setLastKeydownProcessed(#wx_ref{type=ThisT,ref=ThisRef},Val)
 -spec saveFile(This, Filename) -> boolean() when
 	This::wxStyledTextCtrl(), Filename::unicode:chardata().
 saveFile(#wx_ref{type=ThisT,ref=ThisRef},Filename)
- when is_list(Filename) ->
+ when ?is_chardata(Filename) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Filename_UC = unicode:characters_to_binary([Filename,0]),
   wxe_util:call(?wxStyledTextCtrl_SaveFile,
@@ -3948,7 +3948,7 @@ saveFile(#wx_ref{type=ThisT,ref=ThisRef},Filename)
 -spec loadFile(This, Filename) -> boolean() when
 	This::wxStyledTextCtrl(), Filename::unicode:chardata().
 loadFile(#wx_ref{type=ThisT,ref=ThisRef},Filename)
- when is_list(Filename) ->
+ when ?is_chardata(Filename) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Filename_UC = unicode:characters_to_binary([Filename,0]),
   wxe_util:call(?wxStyledTextCtrl_LoadFile,
@@ -3969,7 +3969,7 @@ doDragOver(#wx_ref{type=ThisT,ref=ThisRef},X,Y,Def)
 -spec doDropText(This, X, Y, Data) -> boolean() when
 	This::wxStyledTextCtrl(), X::integer(), Y::integer(), Data::unicode:chardata().
 doDropText(#wx_ref{type=ThisT,ref=ThisRef},X,Y,Data)
- when is_integer(X),is_integer(Y),is_list(Data) ->
+ when is_integer(X),is_integer(Y),?is_chardata(Data) ->
   ?CLASS(ThisT,wxStyledTextCtrl),
   Data_UC = unicode:characters_to_binary([Data,0]),
   wxe_util:call(?wxStyledTextCtrl_DoDropText,
diff --git a/lib/wx/src/gen/wxSystemOptions.erl b/lib/wx/src/gen/wxSystemOptions.erl
index 28d77b1e26..c613d66c73 100644
--- a/lib/wx/src/gen/wxSystemOptions.erl
+++ b/lib/wx/src/gen/wxSystemOptions.erl
@@ -39,7 +39,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 -spec getOption(Name) -> unicode:charlist() when
 	Name::unicode:chardata().
 getOption(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxSystemOptions_GetOption,
   <<(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((4+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -48,7 +48,7 @@ getOption(Name)
 -spec getOptionInt(Name) -> integer() when
 	Name::unicode:chardata().
 getOptionInt(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxSystemOptions_GetOptionInt,
   <<(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((4+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -57,7 +57,7 @@ getOptionInt(Name)
 -spec hasOption(Name) -> boolean() when
 	Name::unicode:chardata().
 hasOption(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxSystemOptions_HasOption,
   <<(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((4+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -66,7 +66,7 @@ hasOption(Name)
 -spec isFalse(Name) -> boolean() when
 	Name::unicode:chardata().
 isFalse(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxSystemOptions_IsFalse,
   <<(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((4+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -81,12 +81,12 @@ isFalse(Name)
       (Name, Value) -> 'ok' when
 	Name::unicode:chardata(), Value::unicode:chardata().
 setOption(Name,Value)
- when is_list(Name),is_integer(Value) ->
+ when ?is_chardata(Name),is_integer(Value) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:cast(?wxSystemOptions_SetOption_2_0,
   <<(byte_size(Name_UC)):32/?UI,(Name_UC)/binary, 0:(((8- ((4+byte_size(Name_UC)) band 16#7)) band 16#7))/unit:8,Value:32/?UI>>);
 setOption(Name,Value)
- when is_list(Name),is_list(Value) ->
+ when ?is_chardata(Name),?is_chardata(Value) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   Value_UC = unicode:characters_to_binary([Value,0]),
   wxe_util:cast(?wxSystemOptions_SetOption_2_1,
diff --git a/lib/wx/src/gen/wxTextCtrl.erl b/lib/wx/src/gen/wxTextCtrl.erl
index 4647b37a07..7ffb161cf5 100644
--- a/lib/wx/src/gen/wxTextCtrl.erl
+++ b/lib/wx/src/gen/wxTextCtrl.erl
@@ -126,7 +126,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id, Options)
 -spec appendText(This, Text) -> 'ok' when
 	This::wxTextCtrl(), Text::unicode:chardata().
 appendText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxTextCtrl_AppendText,
@@ -238,7 +238,7 @@ discardEdits(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec changeValue(This, Value) -> 'ok' when
 	This::wxTextCtrl(), Value::unicode:chardata().
 changeValue(#wx_ref{type=ThisT,ref=ThisRef},Value)
- when is_list(Value) ->
+ when ?is_chardata(Value) ->
   ?CLASS(ThisT,wxTextCtrl),
   Value_UC = unicode:characters_to_binary([Value,0]),
   wxe_util:cast(?wxTextCtrl_ChangeValue,
@@ -383,7 +383,7 @@ isSingleLine(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxTextCtrl(), File::unicode:chardata().
 
 loadFile(This,File)
- when is_record(This, wx_ref),is_list(File) ->
+ when is_record(This, wx_ref),?is_chardata(File) ->
   loadFile(This,File, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtextctrl.html#wxtextctrlloadfile">external documentation</a>.
@@ -391,7 +391,7 @@ loadFile(This,File)
 	This::wxTextCtrl(), File::unicode:chardata(),
 	Option :: {'fileType', integer()}.
 loadFile(#wx_ref{type=ThisT,ref=ThisRef},File, Options)
- when is_list(File),is_list(Options) ->
+ when ?is_chardata(File),is_list(Options) ->
   ?CLASS(ThisT,wxTextCtrl),
   File_UC = unicode:characters_to_binary([File,0]),
   MOpts = fun({fileType, FileType}, Acc) -> [<<1:32/?UI,FileType:32/?UI>>|Acc];
@@ -447,7 +447,7 @@ remove(#wx_ref{type=ThisT,ref=ThisRef},From,To)
 -spec replace(This, From, To, Value) -> 'ok' when
 	This::wxTextCtrl(), From::integer(), To::integer(), Value::unicode:chardata().
 replace(#wx_ref{type=ThisT,ref=ThisRef},From,To,Value)
- when is_integer(From),is_integer(To),is_list(Value) ->
+ when is_integer(From),is_integer(To),?is_chardata(Value) ->
   ?CLASS(ThisT,wxTextCtrl),
   Value_UC = unicode:characters_to_binary([Value,0]),
   wxe_util:cast(?wxTextCtrl_Replace,
@@ -543,7 +543,7 @@ setStyle(#wx_ref{type=ThisT,ref=ThisRef},Start,End,#wx_ref{type=StyleT,ref=Style
 -spec setValue(This, Value) -> 'ok' when
 	This::wxTextCtrl(), Value::unicode:chardata().
 setValue(#wx_ref{type=ThisT,ref=ThisRef},Value)
- when is_list(Value) ->
+ when ?is_chardata(Value) ->
   ?CLASS(ThisT,wxTextCtrl),
   Value_UC = unicode:characters_to_binary([Value,0]),
   wxe_util:cast(?wxTextCtrl_SetValue,
@@ -570,7 +570,7 @@ undo(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec writeText(This, Text) -> 'ok' when
 	This::wxTextCtrl(), Text::unicode:chardata().
 writeText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxTextCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxTextCtrl_WriteText,
diff --git a/lib/wx/src/gen/wxTextDataObject.erl b/lib/wx/src/gen/wxTextDataObject.erl
index eb3e1f4bff..5c8a44a879 100644
--- a/lib/wx/src/gen/wxTextDataObject.erl
+++ b/lib/wx/src/gen/wxTextDataObject.erl
@@ -76,7 +76,7 @@ getText(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setText(This, Text) -> 'ok' when
 	This::wxTextDataObject(), Text::unicode:chardata().
 setText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxTextDataObject),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxTextDataObject_SetText,
diff --git a/lib/wx/src/gen/wxTextEntryDialog.erl b/lib/wx/src/gen/wxTextEntryDialog.erl
index 6d2016c1ac..d0b55fd769 100644
--- a/lib/wx/src/gen/wxTextEntryDialog.erl
+++ b/lib/wx/src/gen/wxTextEntryDialog.erl
@@ -93,7 +93,7 @@ parent_class(_Class) -> erlang:error({badtype, ?MODULE}).
 	Parent::wxWindow:wxWindow(), Message::unicode:chardata().
 
 new(Parent,Message)
- when is_record(Parent, wx_ref),is_list(Message) ->
+ when is_record(Parent, wx_ref),?is_chardata(Message) ->
   new(Parent,Message, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtextentrydialog.html#wxtextentrydialogwxtextentrydialog">external documentation</a>.
@@ -104,7 +104,7 @@ new(Parent,Message)
 		 | {'style', integer()}
 		 | {'pos', {X::integer(), Y::integer()}}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Message, Options)
- when is_list(Message),is_list(Options) ->
+ when ?is_chardata(Message),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Message_UC = unicode:characters_to_binary([Message,0]),
   MOpts = fun({caption, Caption}, Acc) ->   Caption_UC = unicode:characters_to_binary([Caption,0]),[<<1:32/?UI,(byte_size(Caption_UC)):32/?UI,(Caption_UC)/binary, 0:(((8- ((0+byte_size(Caption_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -128,7 +128,7 @@ getValue(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setValue(This, Val) -> 'ok' when
 	This::wxTextEntryDialog(), Val::unicode:chardata().
 setValue(#wx_ref{type=ThisT,ref=ThisRef},Val)
- when is_list(Val) ->
+ when ?is_chardata(Val) ->
   ?CLASS(ThisT,wxTextEntryDialog),
   Val_UC = unicode:characters_to_binary([Val,0]),
   wxe_util:cast(?wxTextEntryDialog_SetValue,
diff --git a/lib/wx/src/gen/wxToggleButton.erl b/lib/wx/src/gen/wxToggleButton.erl
index 9d96527af1..6a41cef9ae 100644
--- a/lib/wx/src/gen/wxToggleButton.erl
+++ b/lib/wx/src/gen/wxToggleButton.erl
@@ -90,7 +90,7 @@ new() ->
 	Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 new(Parent,Id,Label)
- when is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   new(Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtogglebutton.html#wxtogglebuttonwxtogglebutton">external documentation</a>.
@@ -101,7 +101,7 @@ new(Parent,Id,Label)
 		 | {'style', integer()}
 		 | {'validator', wx:wx_object()}.
 new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
   MOpts = fun({pos, {PosX,PosY}}, Acc) -> [<<1:32/?UI,PosX:32/?UI,PosY:32/?UI,0:32>>|Acc];
@@ -118,7 +118,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
 	This::wxToggleButton(), Parent::wxWindow:wxWindow(), Id::integer(), Label::unicode:chardata().
 
 create(This,Parent,Id,Label)
- when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),is_list(Label) ->
+ when is_record(This, wx_ref),is_record(Parent, wx_ref),is_integer(Id),?is_chardata(Label) ->
   create(This,Parent,Id,Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtogglebutton.html#wxtogglebuttoncreate">external documentation</a>.
@@ -129,7 +129,7 @@ create(This,Parent,Id,Label)
 		 | {'style', integer()}
 		 | {'validator', wx:wx_object()}.
 create(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Id,Label, Options)
- when is_integer(Id),is_list(Label),is_list(Options) ->
+ when is_integer(Id),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxToggleButton),
   ?CLASS(ParentT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
diff --git a/lib/wx/src/gen/wxToolBar.erl b/lib/wx/src/gen/wxToolBar.erl
index be971c345d..a3d337ef59 100644
--- a/lib/wx/src/gen/wxToolBar.erl
+++ b/lib/wx/src/gen/wxToolBar.erl
@@ -142,7 +142,7 @@ addTool(This,Toolid,Bitmap)
 		 | {'longHelpString', unicode:chardata()}.
 
 addTool(This,Toolid,Label,Bitmap)
- when is_record(This, wx_ref),is_integer(Toolid),is_list(Label),is_record(Bitmap, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Toolid),?is_chardata(Label),is_record(Bitmap, wx_ref) ->
   addTool(This,Toolid,Label,Bitmap, []);
 
 addTool(This,Toolid,Bitmap,BmpDisabled)
@@ -187,10 +187,10 @@ addTool(#wx_ref{type=ThisT,ref=ThisRef},Toolid,#wx_ref{type=BitmapT,ref=BitmapRe
 		 | {'longHelpString', unicode:chardata()}.
 
 addTool(This,Toolid,Label,Bitmap,BmpDisabled)
- when is_record(This, wx_ref),is_integer(Toolid),is_list(Label),is_record(Bitmap, wx_ref),is_record(BmpDisabled, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Toolid),?is_chardata(Label),is_record(Bitmap, wx_ref),is_record(BmpDisabled, wx_ref) ->
   addTool(This,Toolid,Label,Bitmap,BmpDisabled, []);
 addTool(#wx_ref{type=ThisT,ref=ThisRef},Toolid,Label,#wx_ref{type=BitmapT,ref=BitmapRef}, Options)
- when is_integer(Toolid),is_list(Label),is_list(Options) ->
+ when is_integer(Toolid),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxToolBar),
   Label_UC = unicode:characters_to_binary([Label,0]),
   ?CLASS(BitmapT,wxBitmap),
@@ -237,7 +237,7 @@ addTool(This,Toolid,Bitmap,BmpDisabled,Toggle,XPos)
  when is_record(This, wx_ref),is_integer(Toolid),is_record(Bitmap, wx_ref),is_record(BmpDisabled, wx_ref),is_boolean(Toggle),is_integer(XPos) ->
   addTool(This,Toolid,Bitmap,BmpDisabled,Toggle,XPos, []);
 addTool(#wx_ref{type=ThisT,ref=ThisRef},Toolid,Label,#wx_ref{type=BitmapT,ref=BitmapRef},#wx_ref{type=BmpDisabledT,ref=BmpDisabledRef}, Options)
- when is_integer(Toolid),is_list(Label),is_list(Options) ->
+ when is_integer(Toolid),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxToolBar),
   Label_UC = unicode:characters_to_binary([Label,0]),
   ?CLASS(BitmapT,wxBitmap),
@@ -277,7 +277,7 @@ addTool(#wx_ref{type=ThisT,ref=ThisRef},Toolid,#wx_ref{type=BitmapT,ref=BitmapRe
 	This::wxToolBar(), Toolid::integer(), Label::unicode:chardata(), Bitmap::wxBitmap:wxBitmap().
 
 addCheckTool(This,Toolid,Label,Bitmap)
- when is_record(This, wx_ref),is_integer(Toolid),is_list(Label),is_record(Bitmap, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Toolid),?is_chardata(Label),is_record(Bitmap, wx_ref) ->
   addCheckTool(This,Toolid,Label,Bitmap, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtoolbar.html#wxtoolbaraddchecktool">external documentation</a>.
@@ -288,7 +288,7 @@ addCheckTool(This,Toolid,Label,Bitmap)
 		 | {'longHelp', unicode:chardata()}
 		 | {'data', wx:wx_object()}.
 addCheckTool(#wx_ref{type=ThisT,ref=ThisRef},Toolid,Label,#wx_ref{type=BitmapT,ref=BitmapRef}, Options)
- when is_integer(Toolid),is_list(Label),is_list(Options) ->
+ when is_integer(Toolid),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxToolBar),
   Label_UC = unicode:characters_to_binary([Label,0]),
   ?CLASS(BitmapT,wxBitmap),
@@ -306,7 +306,7 @@ addCheckTool(#wx_ref{type=ThisT,ref=ThisRef},Toolid,Label,#wx_ref{type=BitmapT,r
 	This::wxToolBar(), Toolid::integer(), Label::unicode:chardata(), Bitmap::wxBitmap:wxBitmap().
 
 addRadioTool(This,Toolid,Label,Bitmap)
- when is_record(This, wx_ref),is_integer(Toolid),is_list(Label),is_record(Bitmap, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Toolid),?is_chardata(Label),is_record(Bitmap, wx_ref) ->
   addRadioTool(This,Toolid,Label,Bitmap, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtoolbar.html#wxtoolbaraddradiotool">external documentation</a>.
@@ -317,7 +317,7 @@ addRadioTool(This,Toolid,Label,Bitmap)
 		 | {'longHelp', unicode:chardata()}
 		 | {'data', wx:wx_object()}.
 addRadioTool(#wx_ref{type=ThisT,ref=ThisRef},Toolid,Label,#wx_ref{type=BitmapT,ref=BitmapRef}, Options)
- when is_integer(Toolid),is_list(Label),is_list(Options) ->
+ when is_integer(Toolid),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxToolBar),
   Label_UC = unicode:characters_to_binary([Label,0]),
   ?CLASS(BitmapT,wxBitmap),
@@ -545,7 +545,7 @@ insertTool(This,Pos,Toolid,Bitmap)
 		 | {'longHelp', unicode:chardata()}.
 
 insertTool(This,Pos,Toolid,Label,Bitmap)
- when is_record(This, wx_ref),is_integer(Pos),is_integer(Toolid),is_list(Label),is_record(Bitmap, wx_ref) ->
+ when is_record(This, wx_ref),is_integer(Pos),is_integer(Toolid),?is_chardata(Label),is_record(Bitmap, wx_ref) ->
   insertTool(This,Pos,Toolid,Label,Bitmap, []);
 insertTool(#wx_ref{type=ThisT,ref=ThisRef},Pos,Toolid,#wx_ref{type=BitmapT,ref=BitmapRef}, Options)
  when is_integer(Pos),is_integer(Toolid),is_list(Options) ->
@@ -571,7 +571,7 @@ insertTool(#wx_ref{type=ThisT,ref=ThisRef},Pos,Toolid,#wx_ref{type=BitmapT,ref=B
 		 | {'longHelp', unicode:chardata()}
 		 | {'clientData', wx:wx_object()}.
 insertTool(#wx_ref{type=ThisT,ref=ThisRef},Pos,Toolid,Label,#wx_ref{type=BitmapT,ref=BitmapRef}, Options)
- when is_integer(Pos),is_integer(Toolid),is_list(Label),is_list(Options) ->
+ when is_integer(Pos),is_integer(Toolid),?is_chardata(Label),is_list(Options) ->
   ?CLASS(ThisT,wxToolBar),
   Label_UC = unicode:characters_to_binary([Label,0]),
   ?CLASS(BitmapT,wxBitmap),
@@ -624,7 +624,7 @@ setToolBitmapSize(#wx_ref{type=ThisT,ref=ThisRef},{SizeW,SizeH})
 -spec setToolLongHelp(This, Toolid, HelpString) -> 'ok' when
 	This::wxToolBar(), Toolid::integer(), HelpString::unicode:chardata().
 setToolLongHelp(#wx_ref{type=ThisT,ref=ThisRef},Toolid,HelpString)
- when is_integer(Toolid),is_list(HelpString) ->
+ when is_integer(Toolid),?is_chardata(HelpString) ->
   ?CLASS(ThisT,wxToolBar),
   HelpString_UC = unicode:characters_to_binary([HelpString,0]),
   wxe_util:cast(?wxToolBar_SetToolLongHelp,
@@ -643,7 +643,7 @@ setToolPacking(#wx_ref{type=ThisT,ref=ThisRef},Packing)
 -spec setToolShortHelp(This, Id, HelpString) -> 'ok' when
 	This::wxToolBar(), Id::integer(), HelpString::unicode:chardata().
 setToolShortHelp(#wx_ref{type=ThisT,ref=ThisRef},Id,HelpString)
- when is_integer(Id),is_list(HelpString) ->
+ when is_integer(Id),?is_chardata(HelpString) ->
   ?CLASS(ThisT,wxToolBar),
   HelpString_UC = unicode:characters_to_binary([HelpString,0]),
   wxe_util:cast(?wxToolBar_SetToolShortHelp,
diff --git a/lib/wx/src/gen/wxToolTip.erl b/lib/wx/src/gen/wxToolTip.erl
index 163e764d8c..0596173ebe 100644
--- a/lib/wx/src/gen/wxToolTip.erl
+++ b/lib/wx/src/gen/wxToolTip.erl
@@ -55,7 +55,7 @@ setDelay(Msecs)
 -spec new(Tip) -> wxToolTip() when
 	Tip::unicode:chardata().
 new(Tip)
- when is_list(Tip) ->
+ when ?is_chardata(Tip) ->
   Tip_UC = unicode:characters_to_binary([Tip,0]),
   wxe_util:construct(?wxToolTip_new,
   <<(byte_size(Tip_UC)):32/?UI,(Tip_UC)/binary, 0:(((8- ((4+byte_size(Tip_UC)) band 16#7)) band 16#7))/unit:8>>).
@@ -64,7 +64,7 @@ new(Tip)
 -spec setTip(This, Tip) -> 'ok' when
 	This::wxToolTip(), Tip::unicode:chardata().
 setTip(#wx_ref{type=ThisT,ref=ThisRef},Tip)
- when is_list(Tip) ->
+ when ?is_chardata(Tip) ->
   ?CLASS(ThisT,wxToolTip),
   Tip_UC = unicode:characters_to_binary([Tip,0]),
   wxe_util:cast(?wxToolTip_SetTip,
diff --git a/lib/wx/src/gen/wxToolbook.erl b/lib/wx/src/gen/wxToolbook.erl
index c7ff858209..787d4a468e 100644
--- a/lib/wx/src/gen/wxToolbook.erl
+++ b/lib/wx/src/gen/wxToolbook.erl
@@ -120,7 +120,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id, Options)
 	This::wxToolbook(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 addPage(This,Page,Text)
- when is_record(This, wx_ref),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_record(Page, wx_ref),?is_chardata(Text) ->
   addPage(This,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtoolbook.html#wxtoolbookaddpage">external documentation</a>.
@@ -129,7 +129,7 @@ addPage(This,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 addPage(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxToolbook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -296,7 +296,7 @@ hitTest(#wx_ref{type=ThisT,ref=ThisRef},{PtX,PtY})
 	This::wxToolbook(), N::integer(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 insertPage(This,N,Page,Text)
- when is_record(This, wx_ref),is_integer(N),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(N),is_record(Page, wx_ref),?is_chardata(Text) ->
   insertPage(This,N,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtoolbook.html#wxtoolbookinsertpage">external documentation</a>.
@@ -305,7 +305,7 @@ insertPage(This,N,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 insertPage(#wx_ref{type=ThisT,ref=ThisRef},N,#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_integer(N),is_list(Text),is_list(Options) ->
+ when is_integer(N),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxToolbook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -347,7 +347,7 @@ setPageImage(#wx_ref{type=ThisT,ref=ThisRef},N,ImageId)
 -spec setPageText(This, N, StrText) -> boolean() when
 	This::wxToolbook(), N::integer(), StrText::unicode:chardata().
 setPageText(#wx_ref{type=ThisT,ref=ThisRef},N,StrText)
- when is_integer(N),is_list(StrText) ->
+ when is_integer(N),?is_chardata(StrText) ->
   ?CLASS(ThisT,wxToolbook),
   StrText_UC = unicode:characters_to_binary([StrText,0]),
   wxe_util:call(?wxToolbook_SetPageText,
diff --git a/lib/wx/src/gen/wxTopLevelWindow.erl b/lib/wx/src/gen/wxTopLevelWindow.erl
index 428694afc4..96135052bc 100644
--- a/lib/wx/src/gen/wxTopLevelWindow.erl
+++ b/lib/wx/src/gen/wxTopLevelWindow.erl
@@ -273,7 +273,7 @@ setShape(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=RegionT,ref=RegionRef}) ->
 -spec setTitle(This, Title) -> 'ok' when
 	This::wxTopLevelWindow(), Title::unicode:chardata().
 setTitle(#wx_ref{type=ThisT,ref=ThisRef},Title)
- when is_list(Title) ->
+ when ?is_chardata(Title) ->
   ?CLASS(ThisT,wxTopLevelWindow),
   Title_UC = unicode:characters_to_binary([Title,0]),
   wxe_util:cast(?wxTopLevelWindow_SetTitle,
diff --git a/lib/wx/src/gen/wxTreeCtrl.erl b/lib/wx/src/gen/wxTreeCtrl.erl
index de42ddd2b4..68ea754bef 100644
--- a/lib/wx/src/gen/wxTreeCtrl.erl
+++ b/lib/wx/src/gen/wxTreeCtrl.erl
@@ -140,7 +140,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef}, Options)
 	This::wxTreeCtrl(), Text::unicode:chardata().
 
 addRoot(This,Text)
- when is_record(This, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),?is_chardata(Text) ->
   addRoot(This,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtreectrl.html#wxtreectrladdroot">external documentation</a>.
@@ -150,7 +150,7 @@ addRoot(This,Text)
 		 | {'selectedImage', integer()}
 		 | {'data', term()}.
 addRoot(#wx_ref{type=ThisT,ref=ThisRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxTreeCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({image, Image}, Acc) -> [<<1:32/?UI,Image:32/?UI>>|Acc];
@@ -166,7 +166,7 @@ addRoot(#wx_ref{type=ThisT,ref=ThisRef},Text, Options)
 	This::wxTreeCtrl(), Parent::integer(), Text::unicode:chardata().
 
 appendItem(This,Parent,Text)
- when is_record(This, wx_ref),is_integer(Parent),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Parent),?is_chardata(Text) ->
   appendItem(This,Parent,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtreectrl.html#wxtreectrlappenditem">external documentation</a>.
@@ -176,7 +176,7 @@ appendItem(This,Parent,Text)
 		 | {'selectedImage', integer()}
 		 | {'data', term()}.
 appendItem(#wx_ref{type=ThisT,ref=ThisRef},Parent,Text, Options)
- when is_integer(Parent),is_list(Text),is_list(Options) ->
+ when is_integer(Parent),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxTreeCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({image, Image}, Acc) -> [<<1:32/?UI,Image:32/?UI>>|Acc];
@@ -580,7 +580,7 @@ hitTest(#wx_ref{type=ThisT,ref=ThisRef},{PointX,PointY})
 	This::wxTreeCtrl(), Parent::integer(), Pos::integer(), Text::unicode:chardata().
 
 insertItem(This,Parent,Pos,Text)
- when is_record(This, wx_ref),is_integer(Parent),is_integer(Pos),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Parent),is_integer(Pos),?is_chardata(Text) ->
   insertItem(This,Parent,Pos,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtreectrl.html#wxtreectrlinsertitem">external documentation</a>.
@@ -590,7 +590,7 @@ insertItem(This,Parent,Pos,Text)
 		 | {'selImage', integer()}
 		 | {'data', term()}.
 insertItem(#wx_ref{type=ThisT,ref=ThisRef},Parent,Pos,Text, Options)
- when is_integer(Parent),is_integer(Pos),is_list(Text),is_list(Options) ->
+ when is_integer(Parent),is_integer(Pos),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxTreeCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({image, Image}, Acc) -> [<<1:32/?UI,Image:32/?UI>>|Acc];
@@ -659,7 +659,7 @@ isTreeItemIdOk(Id)
 	This::wxTreeCtrl(), Parent::integer(), Text::unicode:chardata().
 
 prependItem(This,Parent,Text)
- when is_record(This, wx_ref),is_integer(Parent),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Parent),?is_chardata(Text) ->
   prependItem(This,Parent,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtreectrl.html#wxtreectrlprependitem">external documentation</a>.
@@ -669,7 +669,7 @@ prependItem(This,Parent,Text)
 		 | {'selectedImage', integer()}
 		 | {'data', term()}.
 prependItem(#wx_ref{type=ThisT,ref=ThisRef},Parent,Text, Options)
- when is_integer(Parent),is_list(Text),is_list(Options) ->
+ when is_integer(Parent),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxTreeCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   MOpts = fun({image, Image}, Acc) -> [<<1:32/?UI,Image:32/?UI>>|Acc];
@@ -848,7 +848,7 @@ setItemImage(#wx_ref{type=ThisT,ref=ThisRef},Item,Image, Options)
 -spec setItemText(This, Item, Text) -> 'ok' when
 	This::wxTreeCtrl(), Item::integer(), Text::unicode:chardata().
 setItemText(#wx_ref{type=ThisT,ref=ThisRef},Item,Text)
- when is_integer(Item),is_list(Text) ->
+ when is_integer(Item),?is_chardata(Text) ->
   ?CLASS(ThisT,wxTreeCtrl),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxTreeCtrl_SetItemText,
diff --git a/lib/wx/src/gen/wxTreeEvent.erl b/lib/wx/src/gen/wxTreeEvent.erl
index 41e86fe41f..368f32a386 100644
--- a/lib/wx/src/gen/wxTreeEvent.erl
+++ b/lib/wx/src/gen/wxTreeEvent.erl
@@ -111,7 +111,7 @@ isEditCancelled(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec setToolTip(This, ToolTip) -> 'ok' when
 	This::wxTreeEvent(), ToolTip::unicode:chardata().
 setToolTip(#wx_ref{type=ThisT,ref=ThisRef},ToolTip)
- when is_list(ToolTip) ->
+ when ?is_chardata(ToolTip) ->
   ?CLASS(ThisT,wxTreeEvent),
   ToolTip_UC = unicode:characters_to_binary([ToolTip,0]),
   wxe_util:cast(?wxTreeEvent_SetToolTip,
diff --git a/lib/wx/src/gen/wxTreebook.erl b/lib/wx/src/gen/wxTreebook.erl
index e30297a298..956652f221 100644
--- a/lib/wx/src/gen/wxTreebook.erl
+++ b/lib/wx/src/gen/wxTreebook.erl
@@ -121,7 +121,7 @@ new(#wx_ref{type=ParentT,ref=ParentRef},Id, Options)
 	This::wxTreebook(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 addPage(This,Page,Text)
- when is_record(This, wx_ref),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_record(Page, wx_ref),?is_chardata(Text) ->
   addPage(This,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtreebook.html#wxtreebookaddpage">external documentation</a>.
@@ -130,7 +130,7 @@ addPage(This,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 addPage(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_list(Text),is_list(Options) ->
+ when ?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxTreebook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -327,7 +327,7 @@ hitTest(#wx_ref{type=ThisT,ref=ThisRef},{PtX,PtY})
 	This::wxTreebook(), Pos::integer(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 insertPage(This,Pos,Page,Text)
- when is_record(This, wx_ref),is_integer(Pos),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Pos),is_record(Page, wx_ref),?is_chardata(Text) ->
   insertPage(This,Pos,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtreebook.html#wxtreebookinsertpage">external documentation</a>.
@@ -336,7 +336,7 @@ insertPage(This,Pos,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 insertPage(#wx_ref{type=ThisT,ref=ThisRef},Pos,#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_integer(Pos),is_list(Text),is_list(Options) ->
+ when is_integer(Pos),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxTreebook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -352,7 +352,7 @@ insertPage(#wx_ref{type=ThisT,ref=ThisRef},Pos,#wx_ref{type=PageT,ref=PageRef},T
 	This::wxTreebook(), Pos::integer(), Page::wxWindow:wxWindow(), Text::unicode:chardata().
 
 insertSubPage(This,Pos,Page,Text)
- when is_record(This, wx_ref),is_integer(Pos),is_record(Page, wx_ref),is_list(Text) ->
+ when is_record(This, wx_ref),is_integer(Pos),is_record(Page, wx_ref),?is_chardata(Text) ->
   insertSubPage(This,Pos,Page,Text, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxtreebook.html#wxtreebookinsertsubpage">external documentation</a>.
@@ -361,7 +361,7 @@ insertSubPage(This,Pos,Page,Text)
 	Option :: {'bSelect', boolean()}
 		 | {'imageId', integer()}.
 insertSubPage(#wx_ref{type=ThisT,ref=ThisRef},Pos,#wx_ref{type=PageT,ref=PageRef},Text, Options)
- when is_integer(Pos),is_list(Text),is_list(Options) ->
+ when is_integer(Pos),?is_chardata(Text),is_list(Options) ->
   ?CLASS(ThisT,wxTreebook),
   ?CLASS(PageT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
@@ -403,7 +403,7 @@ setPageImage(#wx_ref{type=ThisT,ref=ThisRef},N,ImageId)
 -spec setPageText(This, N, StrText) -> boolean() when
 	This::wxTreebook(), N::integer(), StrText::unicode:chardata().
 setPageText(#wx_ref{type=ThisT,ref=ThisRef},N,StrText)
- when is_integer(N),is_list(StrText) ->
+ when is_integer(N),?is_chardata(StrText) ->
   ?CLASS(ThisT,wxTreebook),
   StrText_UC = unicode:characters_to_binary([StrText,0]),
   wxe_util:call(?wxTreebook_SetPageText,
diff --git a/lib/wx/src/gen/wxUpdateUIEvent.erl b/lib/wx/src/gen/wxUpdateUIEvent.erl
index fec42ed8eb..e7bda40a7a 100644
--- a/lib/wx/src/gen/wxUpdateUIEvent.erl
+++ b/lib/wx/src/gen/wxUpdateUIEvent.erl
@@ -181,7 +181,7 @@ setMode(Mode)
 -spec setText(This, Text) -> 'ok' when
 	This::wxUpdateUIEvent(), Text::unicode:chardata().
 setText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxUpdateUIEvent),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxUpdateUIEvent_SetText,
diff --git a/lib/wx/src/gen/wxWindow.erl b/lib/wx/src/gen/wxWindow.erl
index 7f706c84b1..be847861b1 100644
--- a/lib/wx/src/gen/wxWindow.erl
+++ b/lib/wx/src/gen/wxWindow.erl
@@ -348,7 +348,7 @@ findWindow(#wx_ref{type=ThisT,ref=ThisRef},Winid)
   wxe_util:call(?wxWindow_FindWindow_1_0,
   <<ThisRef:32/?UI,Winid:32/?UI>>);
 findWindow(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxWindow),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxWindow_FindWindow_1_1,
@@ -379,7 +379,7 @@ findWindowById(Winid, Options)
 	Name::unicode:chardata().
 
 findWindowByName(Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   findWindowByName(Name, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxwindow.html#wxwindowfindwindowbyname">external documentation</a>.
@@ -387,7 +387,7 @@ findWindowByName(Name)
 	Name::unicode:chardata(),
 	Option :: {'parent', wxWindow()}.
 findWindowByName(Name, Options)
- when is_list(Name),is_list(Options) ->
+ when ?is_chardata(Name),is_list(Options) ->
   Name_UC = unicode:characters_to_binary([Name,0]),
   MOpts = fun({parent, #wx_ref{type=ParentT,ref=ParentRef}}, Acc) ->   ?CLASS(ParentT,wxWindow),[<<1:32/?UI,ParentRef:32/?UI>>|Acc];
           (BadOpt, _) -> erlang:error({badoption, BadOpt}) end,
@@ -400,7 +400,7 @@ findWindowByName(Name, Options)
 	Label::unicode:chardata().
 
 findWindowByLabel(Label)
- when is_list(Label) ->
+ when ?is_chardata(Label) ->
   findWindowByLabel(Label, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxwindow.html#wxwindowfindwindowbylabel">external documentation</a>.
@@ -408,7 +408,7 @@ findWindowByLabel(Label)
 	Label::unicode:chardata(),
 	Option :: {'parent', wxWindow()}.
 findWindowByLabel(Label, Options)
- when is_list(Label),is_list(Options) ->
+ when ?is_chardata(Label),is_list(Options) ->
   Label_UC = unicode:characters_to_binary([Label,0]),
   MOpts = fun({parent, #wx_ref{type=ParentT,ref=ParentRef}}, Acc) ->   ?CLASS(ParentT,wxWindow),[<<1:32/?UI,ParentRef:32/?UI>>|Acc];
           (BadOpt, _) -> erlang:error({badoption, BadOpt}) end,
@@ -728,7 +728,7 @@ getSizer(#wx_ref{type=ThisT,ref=ThisRef}) ->
 	This::wxWindow(), String::unicode:chardata().
 
 getTextExtent(This,String)
- when is_record(This, wx_ref),is_list(String) ->
+ when is_record(This, wx_ref),?is_chardata(String) ->
   getTextExtent(This,String, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxwindow.html#wxwindowgettextextent">external documentation</a>.
@@ -737,7 +737,7 @@ getTextExtent(This,String)
 	This::wxWindow(), String::unicode:chardata(),
 	Option :: {'theFont', wxFont:wxFont()}.
 getTextExtent(#wx_ref{type=ThisT,ref=ThisRef},String, Options)
- when is_list(String),is_list(Options) ->
+ when ?is_chardata(String),is_list(Options) ->
   ?CLASS(ThisT,wxWindow),
   String_UC = unicode:characters_to_binary([String,0]),
   MOpts = fun({theFont, #wx_ref{type=TheFontT,ref=TheFontRef}}, Acc) ->   ?CLASS(TheFontT,wxFont),[<<1:32/?UI,TheFontRef:32/?UI>>|Acc];
@@ -1448,7 +1448,7 @@ setForegroundColour(#wx_ref{type=ThisT,ref=ThisRef},Colour)
 -spec setHelpText(This, Text) -> 'ok' when
 	This::wxWindow(), Text::unicode:chardata().
 setHelpText(#wx_ref{type=ThisT,ref=ThisRef},Text)
- when is_list(Text) ->
+ when ?is_chardata(Text) ->
   ?CLASS(ThisT,wxWindow),
   Text_UC = unicode:characters_to_binary([Text,0]),
   wxe_util:cast(?wxWindow_SetHelpText,
@@ -1467,7 +1467,7 @@ setId(#wx_ref{type=ThisT,ref=ThisRef},Winid)
 -spec setLabel(This, Label) -> 'ok' when
 	This::wxWindow(), Label::unicode:chardata().
 setLabel(#wx_ref{type=ThisT,ref=ThisRef},Label)
- when is_list(Label) ->
+ when ?is_chardata(Label) ->
   ?CLASS(ThisT,wxWindow),
   Label_UC = unicode:characters_to_binary([Label,0]),
   wxe_util:cast(?wxWindow_SetLabel,
@@ -1477,7 +1477,7 @@ setLabel(#wx_ref{type=ThisT,ref=ThisRef},Label)
 -spec setName(This, Name) -> 'ok' when
 	This::wxWindow(), Name::unicode:chardata().
 setName(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxWindow),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:cast(?wxWindow_SetName,
@@ -1716,7 +1716,7 @@ setThemeEnabled(#wx_ref{type=ThisT,ref=ThisRef},EnableTheme)
       (This, Tip) -> 'ok' when
 	This::wxWindow(), Tip::wxToolTip:wxToolTip().
 setToolTip(#wx_ref{type=ThisT,ref=ThisRef},Tip)
- when is_list(Tip) ->
+ when ?is_chardata(Tip) ->
   ?CLASS(ThisT,wxWindow),
   Tip_UC = unicode:characters_to_binary([Tip,0]),
   wxe_util:cast(?wxWindow_SetToolTip_1_0,
diff --git a/lib/wx/src/gen/wxXmlResource.erl b/lib/wx/src/gen/wxXmlResource.erl
index aa65b8b04e..51f6231f48 100644
--- a/lib/wx/src/gen/wxXmlResource.erl
+++ b/lib/wx/src/gen/wxXmlResource.erl
@@ -65,7 +65,7 @@ new(Options)
 	Option :: {'flags', integer()}
 		 | {'domain', unicode:chardata()}.
 new(Filemask, Options)
- when is_list(Filemask),is_list(Options) ->
+ when ?is_chardata(Filemask),is_list(Options) ->
   Filemask_UC = unicode:characters_to_binary([Filemask,0]),
   MOpts = fun({flags, Flags}, Acc) -> [<<1:32/?UI,Flags:32/?UI>>|Acc];
           ({domain, Domain}, Acc) ->   Domain_UC = unicode:characters_to_binary([Domain,0]),[<<2:32/?UI,(byte_size(Domain_UC)):32/?UI,(Domain_UC)/binary, 0:(((8- ((0+byte_size(Domain_UC)) band 16#7)) band 16#7))/unit:8>>|Acc];
@@ -79,7 +79,7 @@ new(Filemask, Options)
 	This::wxXmlResource(), Name::unicode:chardata(), Control::wxWindow:wxWindow().
 
 attachUnknownControl(This,Name,Control)
- when is_record(This, wx_ref),is_list(Name),is_record(Control, wx_ref) ->
+ when is_record(This, wx_ref),?is_chardata(Name),is_record(Control, wx_ref) ->
   attachUnknownControl(This,Name,Control, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_wxxmlresource.html#wxxmlresourceattachunknowncontrol">external documentation</a>.
@@ -87,7 +87,7 @@ attachUnknownControl(This,Name,Control)
 	This::wxXmlResource(), Name::unicode:chardata(), Control::wxWindow:wxWindow(),
 	Option :: {'parent', wxWindow:wxWindow()}.
 attachUnknownControl(#wx_ref{type=ThisT,ref=ThisRef},Name,#wx_ref{type=ControlT,ref=ControlRef}, Options)
- when is_list(Name),is_list(Options) ->
+ when ?is_chardata(Name),is_list(Options) ->
   ?CLASS(ThisT,wxXmlResource),
   Name_UC = unicode:characters_to_binary([Name,0]),
   ?CLASS(ControlT,wxWindow),
@@ -169,7 +169,7 @@ initAllHandlers(#wx_ref{type=ThisT,ref=ThisRef}) ->
 -spec load(This, Filemask) -> boolean() when
 	This::wxXmlResource(), Filemask::unicode:chardata().
 load(#wx_ref{type=ThisT,ref=ThisRef},Filemask)
- when is_list(Filemask) ->
+ when ?is_chardata(Filemask) ->
   ?CLASS(ThisT,wxXmlResource),
   Filemask_UC = unicode:characters_to_binary([Filemask,0]),
   wxe_util:call(?wxXmlResource_Load,
@@ -179,7 +179,7 @@ load(#wx_ref{type=ThisT,ref=ThisRef},Filemask)
 -spec loadBitmap(This, Name) -> wxBitmap:wxBitmap() when
 	This::wxXmlResource(), Name::unicode:chardata().
 loadBitmap(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxXmlResource_LoadBitmap,
@@ -189,7 +189,7 @@ loadBitmap(#wx_ref{type=ThisT,ref=ThisRef},Name)
 -spec loadDialog(This, Parent, Name) -> wxDialog:wxDialog() when
 	This::wxXmlResource(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadDialog(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(ParentT,wxWindow),
   Name_UC = unicode:characters_to_binary([Name,0]),
@@ -200,7 +200,7 @@ loadDialog(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},N
 -spec loadDialog(This, Dlg, Parent, Name) -> boolean() when
 	This::wxXmlResource(), Dlg::wxDialog:wxDialog(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadDialog(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=DlgT,ref=DlgRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(DlgT,wxDialog),
   ?CLASS(ParentT,wxWindow),
@@ -212,7 +212,7 @@ loadDialog(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=DlgT,ref=DlgRef},#wx_ref
 -spec loadFrame(This, Parent, Name) -> wxFrame:wxFrame() when
 	This::wxXmlResource(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadFrame(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(ParentT,wxWindow),
   Name_UC = unicode:characters_to_binary([Name,0]),
@@ -223,7 +223,7 @@ loadFrame(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Na
 -spec loadFrame(This, Frame, Parent, Name) -> boolean() when
 	This::wxXmlResource(), Frame::wxFrame:wxFrame(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadFrame(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=FrameT,ref=FrameRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(FrameT,wxFrame),
   ?CLASS(ParentT,wxWindow),
@@ -235,7 +235,7 @@ loadFrame(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=FrameT,ref=FrameRef},#wx_
 -spec loadIcon(This, Name) -> wxIcon:wxIcon() when
 	This::wxXmlResource(), Name::unicode:chardata().
 loadIcon(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxXmlResource_LoadIcon,
@@ -245,7 +245,7 @@ loadIcon(#wx_ref{type=ThisT,ref=ThisRef},Name)
 -spec loadMenu(This, Name) -> wxMenu:wxMenu() when
 	This::wxXmlResource(), Name::unicode:chardata().
 loadMenu(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxXmlResource_LoadMenu,
@@ -255,7 +255,7 @@ loadMenu(#wx_ref{type=ThisT,ref=ThisRef},Name)
 -spec loadMenuBar(This, Name) -> wxMenuBar:wxMenuBar() when
 	This::wxXmlResource(), Name::unicode:chardata().
 loadMenuBar(#wx_ref{type=ThisT,ref=ThisRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   Name_UC = unicode:characters_to_binary([Name,0]),
   wxe_util:call(?wxXmlResource_LoadMenuBar_1,
@@ -265,7 +265,7 @@ loadMenuBar(#wx_ref{type=ThisT,ref=ThisRef},Name)
 -spec loadMenuBar(This, Parent, Name) -> wxMenuBar:wxMenuBar() when
 	This::wxXmlResource(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadMenuBar(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(ParentT,wxWindow),
   Name_UC = unicode:characters_to_binary([Name,0]),
@@ -276,7 +276,7 @@ loadMenuBar(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},
 -spec loadPanel(This, Parent, Name) -> wxPanel:wxPanel() when
 	This::wxXmlResource(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadPanel(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(ParentT,wxWindow),
   Name_UC = unicode:characters_to_binary([Name,0]),
@@ -287,7 +287,7 @@ loadPanel(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Na
 -spec loadPanel(This, Panel, Parent, Name) -> boolean() when
 	This::wxXmlResource(), Panel::wxPanel:wxPanel(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadPanel(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PanelT,ref=PanelRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(PanelT,wxPanel),
   ?CLASS(ParentT,wxWindow),
@@ -299,7 +299,7 @@ loadPanel(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=PanelT,ref=PanelRef},#wx_
 -spec loadToolBar(This, Parent, Name) -> wxToolBar:wxToolBar() when
 	This::wxXmlResource(), Parent::wxWindow:wxWindow(), Name::unicode:chardata().
 loadToolBar(#wx_ref{type=ThisT,ref=ThisRef},#wx_ref{type=ParentT,ref=ParentRef},Name)
- when is_list(Name) ->
+ when ?is_chardata(Name) ->
   ?CLASS(ThisT,wxXmlResource),
   ?CLASS(ParentT,wxWindow),
   Name_UC = unicode:characters_to_binary([Name,0]),
@@ -327,7 +327,7 @@ setFlags(#wx_ref{type=ThisT,ref=ThisRef},Flags)
 -spec unload(This, Filename) -> boolean() when
 	This::wxXmlResource(), Filename::unicode:chardata().
 unload(#wx_ref{type=ThisT,ref=ThisRef},Filename)
- when is_list(Filename) ->
+ when ?is_chardata(Filename) ->
   ?CLASS(ThisT,wxXmlResource),
   Filename_UC = unicode:characters_to_binary([Filename,0]),
   wxe_util:call(?wxXmlResource_Unload,
diff --git a/lib/wx/src/gen/wx_misc.erl b/lib/wx/src/gen/wx_misc.erl
index ce5d917136..66b1756a2f 100644
--- a/lib/wx/src/gen/wx_misc.erl
+++ b/lib/wx/src/gen/wx_misc.erl
@@ -72,7 +72,7 @@ bell() ->
 -spec findMenuItemId(Frame, MenuString, ItemString) -> integer() when
 	Frame::wxFrame:wxFrame(), MenuString::unicode:chardata(), ItemString::unicode:chardata().
 findMenuItemId(#wx_ref{type=FrameT,ref=FrameRef},MenuString,ItemString)
- when is_list(MenuString),is_list(ItemString) ->
+ when ?is_chardata(MenuString),?is_chardata(ItemString) ->
   ?CLASS(FrameT,wxFrame),
   MenuString_UC = unicode:characters_to_binary([MenuString,0]),
   ItemString_UC = unicode:characters_to_binary([ItemString,0]),
@@ -155,7 +155,7 @@ shell(Options)
 	Url::unicode:chardata().
 
 launchDefaultBrowser(Url)
- when is_list(Url) ->
+ when ?is_chardata(Url) ->
   launchDefaultBrowser(Url, []).
 
 %% @doc See <a href="http://www.wxwidgets.org/manuals/2.8.12/wx_miscellany.html#wxlaunchdefaultbrowser">external documentation</a>.
@@ -163,7 +163,7 @@ launchDefaultBrowser(Url)
 	Url::unicode:chardata(),
 	Option :: {'flags', integer()}.
 launchDefaultBrowser(Url, Options)
- when is_list(Url),is_list(Options) ->
+ when ?is_chardata(Url),is_list(Options) ->
   Url_UC = unicode:characters_to_binary([Url,0]),
   MOpts = fun({flags, Flags}, Acc) -> [<<1:32/?UI,Flags:32/?UI>>|Acc];
           (BadOpt, _) -> erlang:error({badoption, BadOpt}) end,