NtGdiDdSetGammaRamp function
[This function is subject to change with each operating system revision. Instead, use the Microsoft DirectDraw and Microsoft Direct3DAPIs; these APIs insulate applications from such operating system changes, and hide many other difficulties involved in interacting directly with display drivers.]
Sets the gamma ramp for the device.
Syntax
BOOL APIENTRY NtGdiDdSetGammaRamp(
_In_ HANDLE hDirectDraw,
_In_ HDC hdc,
_In_ LPVOID lpGammaRamp
);
Parameters
-
hDirectDraw [in]
-
Handle to the kernel-mode driver object for which the ramp is to be set.
-
hdc [in]
-
Reserved.
-
lpGammaRamp [in]
-
Pointer to an array of DDGAMMARAMP structures.
Return value
The return value is TRUE if the function is successful. Otherwise, it is NULL.
Remarks
It is recommended that applications use the IDirectDrawGammaControl::SetGammaRamp or IDirect3DDevice9::SetGammaRamp methods instead because these methods offer the same functionality independent of the operating system.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
See also