Check out the CommonGraphics examples in the map ENVY/Image Examples. Look
for code that sets up and manipulates "drawables". The basic technique (as I
remember it... it's been a few years since I've done this) is to allocate the
drawable, write to it, and then execute a copy (bitblt?) command to move the
modified bits to the real window.
Good luck.
In article <
[hidden email]>,
[hidden email] wrote:
> Hello ,
>
> Could someone please tell me how to do "double buffering" in VAST.
> I have cross posted this to the Dolphin group since, if anyone there
> knows how to do it in Dolphin, then maybe I can port it to VA.
>
> I hopped to find someway of creating an offscreen drawable, but
> have drawn a blank so far.
>
> I have an Animated GIFF parser up and working and can
> display the images, but it would look better if I could "double
> buffer".
>
> Many thanks
> Ian
>
[hidden email]
>
>
--
Greg Curfman
IBM VisualAge Smalltalk
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