DegaussMonitor function (highlevelmonitorconfigurationapi.h)


The physical monitor configuration functions work using the VESA Monitor Control Command Set (MCCS) standard over an I2C interface. Many monitors don't fully implement that standard; so your use of these commands might result in undefined monitor behavior. We don't recommend using these functions for arbitrary monitors without physically validating that they work as intended.

Degausses a monitor. Degaussing improves a monitor's image quality and color fidelity by demagnetizing the monitor.


_BOOL DegaussMonitor(
  [in] HANDLE hMonitor


[in] hMonitor

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

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.


If this function is supported, the GetMonitorCapabilities function returns the MC_CAPS_DEGAUSS flag. Degaussing is supported only by cathode ray tube (CRT) monitors.

This function takes about 50 milliseconds to return.

This function should not be called frequently, because calling it frequently will not noticeably improve the monitor's image quality or color fidelity.


Requirement Value
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