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-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.
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