On a Palm IIIc, your offscreen window will be 8 bits deep. A full-screen
bitmap that deep takes a lot of space to store. Probably not something you
want to keep in a preference. I know it's tempting to store a bitmap in the
prefs in order to easily return to where you left off when you left the
application, but in general, you should find another more concise
representation to store in the prefs. If redrawing everything from this
state takes long enough to be distracting on a IIIc, you may want to use
WinScreenLock(winLockCopy) and WinScreenUnlock() to make everything appear
at once. Finding a suitable representation for the state of your application
is one of those interesting challenges that makes Palm programming so much
fun!
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