CONST_DDBLTFASTFLAGS
The CONST_DDBLTFASTFLAGS enumeration is used in the trans parameter of the DirectDrawSurface7.BltFast method to determine the type of transfer.
Enum CONST_DDBLTFASTFLAGS
    DDBLTFAST_DESTCOLORKEY =  2
    DDBLTFAST_DONOTWAIT    = 32
    DDBLTFAST_NOCOLORKEY   =  0
    DDBLTFAST_SRCCOLORKEY  =  1
    DDBLTFAST_WAIT         = 16
End Enum
- DDBLTFAST_DESTCOLORKEY 
- Transparent blit that uses the destination's color key. 
- DDBLTFAST_DONOTWAIT
- Does not wait to blit if the blitter is busy and returns without blitting.
- DDBLTFAST_NOCOLORKEY
- Normal copy blit with no transparency. 
- DDBLTFAST_SRCCOLORKEY
- Transparent blit that uses the source's color key. 
- DDBLTFAST_WAIT
- Postpones the DDERR_WASSTILLDRAWING message if the blitter is busy, and returns as soon as the blit can be set up or another error occurs.