I'm not sure that this would work, but I think what you would need to do is to use GetDC() to get a handle to your target window's device context, then use GetPixel() to get the information and finally ReleaseDC().
Image Context
BlitzPlus Forums/BlitzPlus Programming/Image ContextThe forum is locked. These are the original blitzbasic.com forums, kept so they can still be read. No new topics, replies or edits can be made here. To join in, head over to the Blitz3D+ forums.