The clipping rectangle is set for each frmUpdateEvent to just the portion of that form which was obscured by the closing form. That's how the information is passed, not as an explicit parameter.
Most applications don't do anything special with the clipping rectangle, but any drawing they do will be clipped to that rectangle by the operating system. Since the update logic assumes the constraints are satisfied, it will miss some of the exposed areas. -- Peter Epstein -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/tech/support/forums/
