Hi Everyone,

I think this was covered previously, but I've searched
the archive and can't find any topics on it anymore.

I'm writing a game that uses an offscreen window to
blit images to the main window using a Mask image to
maintain the background image of the main window.
I'm using winMask followed by winOverlay to
accomplish this.  Everything works perfectly on OS4.0
and OS5, but on OS3.5, I get strange results.  The
images appear skewed (slanted) when they're drawn to
the main window.
 
Here are the steps I am using:
 
1) copy background image from offscreen to main
window using winPaint
2) copy Mask image (black pixel = keep) from
offscreen using winMask.
3) copy bitmap image from offscreen to main using
winOverlay.
 
Once again, this method works perfectly on OS4.0 and
OS5.  I only get strange results on OS3.5 so I suspect
there is a bug in the OS relating to wincopyRectangle
and transparency issues.
 
Any help would be greatly appreciated!
 
Thanks!


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