Microsoft DirectX 9.0


The GetMonitorFrequency method returns the frequency of the monitor being driven by the DirectDraw object.


HRESULT GetMonitorFrequency(
  LPDWORD lpdwFrequency



Points to the DWORD that will be filled in with the monitor frequency, in 100-Hz units. (For example, 60 Hz is returned as 6000.)

Return Values

Value Description
DD_OK The method succeeded.
DDERR_INVALIDOBJECT DirectDraw received a pointer that was an invalid DirectDraw object.
DDERR_INVALIDPARAMS One or more of the input parameters is invalid.
DDERR_UNSUPPORTED Action not supported.

See Also