The R13B03 release.OTP_R13B03

1 files changed, 42 insertions, 0 deletions

diff --git a/lib/gs/doc/src/examples/ex11.erl b/lib/gs/doc/src/examples/ex11.erl
new file mode 100644
index 0000000000..96343c3c22
--- /dev/null
+++ b/lib/gs/doc/src/examples/ex11.erl
@@ -0,0 +1,42 @@
+-module(ex11).
+-copyright('Copyright (c) 1991-97 Ericsson Telecom AB').
+-vsn('$Revision: /main/release/3 $ ').
+
+-export([start/0,init/0]).
+
+start() ->
+    spawn(ex11,init,[]).
+
+init() ->
+    I= gs:start(),
+    W= gs:window(I,[{title,"Color Demo"},
+                    {width,300},{height,195}]), 
+    B=gs:button(W,[{label,{image,"die_icon"}},{x,271},{y,166},
+                   {width,30}]),
+    gs:config(B,[{bg,yellow},{fg,hotpink1},{data,quit}]),
+    gs:scale(W,[{text,"Red"},{y,0},{range,{0,255}},
+                {orient,horizontal},
+                {height,65},{data,red},{pos,42}]),
+    gs:scale(W,[{text,"Blue"},{y,65},{range,{0,255}},
+                {orient,horizontal},
+                {height,65},{data,blue},{pos,42}]),
+    gs:scale(W,[{text,"Green"},{y,130},{range,{0,255}},
+                {orient,horizontal},
+                {height,65},{data,green},{pos,42}]),
+    gs:config(W,{map,true}),
+    loop(W,0,0,0).
+
+loop(W,R,G,B) ->
+    gs:config(W,{bg,{R,G,B}}),
+    receive
+        {gs,_,click,red,[New_R|_]} ->
+            loop(W,New_R,G,B);
+        {gs,_,click,green,[New_G|_]} ->
+            loop(W,R,New_G,B);
+        {gs,_,click,blue,[New_B|_]} ->
+            loop(W,R,G,New_B);
+        {gs,_,click,quit,_} ->
+            true;
+        {gs,W,destroy,_,_} ->
+            true
+    end.