Dear Forum,
Does the Tungsten have problems drawing grayscale
bitmaps?
Repetitive calls to WinDrawBitmap(pBmp, 0, 0) and
WinPaintBitmap(pBmp, 0, 0) crashes the OS when the
window is redrawn as the user the scrolls up and down
a large 4-bit grayscale bitmap.
1) The bitmap that pBmp points to is created on the fly.
It is an 150 x 150 region of a larger bitmap stored in
a temporary file (a decompressed JPEG).
2) The crash occurs only when scrolling vertically down
a 4-bit and 2-bit grayscale bitmaps on the Tungsten.
- No problems with 16-bit color, 256 color, and monochrome
on the Tungsten.
- No problems when scrolling horizontally. Scrolling
horizontally across the 4-bit and 2-bit grayscale
(as well as all other) bitmaps on a Tungsten works fine.
- No problems on other PalmOS versions. Scrolling vertically
and horizontally around 1,2,4,8,16 bit bitmaps works fine
on OS 3.1, 3.5, and 4.1
Any ideas?
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/support/forums/
