[plt-scheme] Double buffer (scheme/gui)
At Sat, 11 Apr 2009 19:25:29 +0200, CHAMLY wrote:
> Here is what i have in the paint-callback of my canvas:
>
> (send BITMAP-DC-1 clear) ; i move my tunnel
> (send TUNNEL draw-tunnel1 BITMAP-DC-1 y1)
> (send dc draw-bitmap BITMAP-1 (- x-canvas) 0 'solid))
>
>
> (send BITMAP-DC-2 clear) ; i move my copter
> (send BITMAP-DC-2 draw-bitmap copterUp 0 0 'solid)
>
> (send dc draw-bitmap BITMAP-2 150 (send COPTER get-y-
> copter) 'solid))
>
> The problem is that my copter still flickers, and i don't know why??
Does it help to specify the 'no-autoclear style when creating the
canvas%?