CONST_DDSGRFLAGS

The CONST_DDSGRFLAGS enumeration is used in the flags parameter of the DirectDrawGammaControl.SetGammaRamp method to indicate that gamma calibration is desired.

Enum CONST_DDSGRFLAGS
    DDSGR_CALIBRATE = 1
    DDSGR_DEFAULT = 0
End Enum

DDSGR_DEFAULT

Sets the gamma ramp without calibrating the gamma ramp to the physical properties of the display.

DDSGR_CALIBRATE

Requests that the calibrator adjust the gamma ramp according to the physical properties of the display, making the result identical on all systems. If calibration is not needed, set this parameter to 0.