Yes, the direct screen access is always extremely slow. A back buffer using
WinCreateBitmapWindow is actually faster than locking/unlocking the screen
directly. It is also a good idea to use manual functions to clear that back
buffer. On my Palm Zire 71 i get 50% speed increase if i code my own clear
routine in ASM and then use the standart routines to blit the back buffer to
the screen (WinDrawBitmap).
--
For information on using the Palm Developer Forums, or to unsubscribe, please
see http://www.palmos.com/dev/support/forums/
