The R13B03 release.OTP_R13B03

1 files changed, 40 insertions, 0 deletions

diff --git a/lib/gs/doc/src/examples/ex16.erl b/lib/gs/doc/src/examples/ex16.erl
new file mode 100644
index 0000000000..9c995d16bf
--- /dev/null
+++ b/lib/gs/doc/src/examples/ex16.erl
@@ -0,0 +1,40 @@
+-module(ex16).
+-copyright('Copyright (c) 1991-97 Ericsson Telecom AB').
+-vsn('$Revision: /main/release/3 $ ').
+
+-export([start/0,init/0]).
+
+start() -> spawn(ex16, init, []).
+
+init() ->
+    I=gs:start(),
+    Win=gs:create(window, I,
+                  [{width, 200},{height, 200},
+                   {title,"Default Demo"},{map, true}]),
+    gs:create(canvas, can1,Win,
+	      [{x,0},{y, 0},{width,200},{height,200},
+	       {default,text,{font,{courier,bold,19}}},
+	       {default,text,{fg,blue}},
+	       {default,rectangle,{fill,red}},{default,text,{text,"Pow!"}},
+	       {default,oval,{fill,green}}]),
+    {A,B,C} = erlang:now(),
+    random:seed(A,B,C),
+    loop().
+
+loop() ->
+    receive
+	{gs,_Id,destroy,_Data,_Arg} -> bye
+    after 500 ->
+	    XY = {random:uniform(200),random:uniform(200)},
+	    draw(random:uniform(3),XY),
+	    loop()
+    end.
+
+draw(1,XY) ->
+    gs:create(text,can1,[{coords,[XY]}]);
+draw(2,XY) ->
+    XY2 = {random:uniform(200),random:uniform(200)},
+    gs:create(rectangle,can1,[{coords,[XY,XY2]}]);
+draw(3,XY) ->
+    XY2 = {random:uniform(200),random:uniform(200)},
+    gs:create(oval,can1,[{coords,[XY,XY2]}]).