BDB_OPAQUE

Maps transparent pixels to CC_FOREGROUND

0

BDB_TRANSPARENT

The transparent color value is the RGB color value corresponding to the first pixel in the 8-bit image that uses a color map

1

BDB_3DMAPPED

The RGB values that exist in an 8-bit bitmap color map that correspond to the Microsoft values for dark gray, gray, and light gray, that is, COLOR_3DSHADOW, COLOR_3DFACE, and COLOR_3DLIGHT

2