CONST_DDCKEYFLAGS
The CONST_DDCKEYFLAGS enumeration is used in the flags parameter of the DirectDrawSurface7.SetColorKey method to specify the type of color key requested.
Enum CONST_DDCKEYFLAGS
    DDCKEY_COLORSPACE =  1
    DDCKEY_DESTBLT    =  2
    DDCKEY_DESTOVERLAY = 4
    DDCKEY_SRCBLT     =  8
    DDCKEY_SRCOVERLAY = 16
End Enum
- DDCKEY_COLORSPACE 
- Color space. Not set if the type contains a single color key. 
- DDCKEY_DESTBLT 
- Color key or color space to be used as a  for blit operations. 
- DDCKEY_DESTOVERLAY
- Color key or color space to be used as a destination color key for overlay operations. 
- DDCKEY_SRCBLT
- Color key or color space to be used as a  for blit operations. 
- DDCKEY_SRCOVERLAY
- Color key or color space to be used as a source color key for overlay operations.