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require 'sdl'
SDL.init( SDL::INIT_VIDEO )
screen = SDL::setVideoMode(640,480,16,SDL::SWSURFACE)
image = SDL::Surface.loadBMP("icon.bmp")
image.setColorKey( SDL::SRCCOLORKEY ,0)
image = image.displayFormat
event=SDL::Event.new
i=0;
while true
if event.poll != 0 then
if event.type==SDL::Event::QUIT then
break
end
if event.type==SDL::Event::KEYDOWN then
exit
end
end
screen.fillRect(0,0,640,480,0)
image.setAlpha(SDL::SRCALPHA,i%256)
screen.put(image,310,195)
i+=1
screen.flip
end
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