SetMonitorRedGreenOrBlueGain function

Sets a monitor's red, green, or blue gain value.


_BOOL SetMonitorRedGreenOrBlueGain(
  HANDLE       hMonitor,
  MC_GAIN_TYPE gtGainType,
  DWORD        dwNewGain



Handle to a physical monitor. To get the monitor handle, call GetPhysicalMonitorsFromHMONITOR or GetPhysicalMonitorsFromIDirect3DDevice9.


A member of the MC_GAIN_TYPE enumeration, specifying whether to set the red, green, or blue gain.


Red, green, or blue gain value. To get the monitor's minimum and maximum gain values, call GetMonitorRedGreenOrBlueGain.

Return Value

If the function succeeds, the return value is TRUE. If the function fails, the return value is FALSE. To get extended error information, call GetLastError.


Gain settings are generally used to adjust the monitor's white point.

If this function is supported, the GetMonitorCapabilities function returns the MC_CAPS_RED_GREEN_BLUE_GAIN flag.

This function takes about 50 milliseconds to return.

Changing the gain settings can change the color temperature. To get the new color temperature, call GetMonitorColorTemperature.

The gain settings are continuous monitor settings. For more information, see Using the High-Level Monitor Configuration Functions.


Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header highlevelmonitorconfigurationapi.h
Library Dxva2.lib
DLL Dxva2.dll

See Also

Monitor Configuration Functions