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Diffstat (limited to 'lib/gs/doc/src/examples/ex16.erl')
-rw-r--r-- | lib/gs/doc/src/examples/ex16.erl | 40 |
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]}]). |