To the many people who are having huge problems getting signature
capture code working on both OSes before 3.5 and OS 3.5 and later.
Why haven't you refactored the problem? If the issue is getting data
off the screen, why not change the problem? A signature capture program
boils down to
1) capture user pen strokes
2) show the strokes to the user
3) save the strokes for later use
This begs for using backing store code, where the pen strokes modify an
offscreen bitmap, and the bitmap is copied back to the main screen after
each penMove. Then, when you're finished, you have a bitmap all ready
for you to use and you don't have to deal with grabbing out of screen
memory.
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