dubois@uwmacc.UUCP (Paul DuBois) (04/08/86)
When the Mac Plus was introduced, a list of differences between the old and new ROMs was posted, among which was a reference to a "rare bug in CopyBits" when the bitMaps overlapped. Does anyone know the exact conditions under which the bug becomes manifest? I have the old ROM, and I think I have run into it in one of my programs, but my bitMaps aren't overlapping. I am doing some picture drawing, where the destination picture frame is exactly twice as long on a side as the original. Sometimes after drawing the dest picture, my program stops responding to the mouse (but not always). Other times it crashes. Other times only part of the picture gets drawn. Other times it works. When I change the size of the destination frame, everything works fine. -- | Paul DuBois {allegra,ihnp4,seismo}!uwvax!uwmacc!dubois --+-- | Doth the hawk fly by thy wisdom, and stretch her wings | toward the south? Job 39:26