The DDGAMMARAMP structure contains red, green, and blue ramp data for the IDirectDrawGammaControl::GetGammaRamp and IDirectDrawGammaControl::SetGammaRamp methods.
typedef struct _DDGAMMARAMP {
WORD red[256];
WORD green[256];
WORD blue[256];
} DDGAMMARAMP, FAR * LPDDGAMMARAMP;
Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
Header: Declared in ddraw.h.