PocketMatrix

Short answer: call pDestinationSurface->SetClipper( NULL ) before you do any blting and you should be set.

The default behavior is that a Blt will fail if any part of the destination rectangle is offscreen. (Basically, you've passed in invalid coordinates!)

If you set a clipper (see ), the behavior changes so that if the destination rectangle is partially outside the clipping region, the source/destination rectangles are adjusted for you.

Thanks a million for your detailed answer and for explaining how it works.

I have tried your suggestion and it works great now.

Regards.