[Pythoncard-users] minimize window fix for BitmapCanvas

[Kevin A. <al...@se...>]

Thanks to Robin, I was able to fix a bug in BitmapCanvas. Previously, when a
window was minimized, the BitmapCanvas widget would receive a size event
with a (width, height) of (0, 0) so it promptly deleted the offscreen
bitmap, then when the window was restored the bitmap would be empty. I've
changed the code, so that the offscreen bitmap is not modified if the size
is (0, 0). The change is in cvs.

ka