i can't say in which version of Windows CE this came to being
and - we don't usually care about CE too much :bg
however, it is entirely conceivable that we may want to write code
that supports images (or DIB's) that come from or are intended for a CE platform
BI_ALPHABITFIELDS equ 4
these images have 16 bytes in four bitmasks for a color table (16 and 32 bpp images)
confusing the issue is the fact that
BI_JPEG equ 4
::)
also, i found this conflicting document that says BI_ALPHABITFIELDS should be 6
http://st-hunter.ru/svn/trunk/SPView/bmplib.h
can't find it on MSDN, but everyplace else i found a #define says 4 :P