### IDirectDraw2::GetMonitorFrequency

The IDirectDraw2::GetMonitorFrequency method retrieves the frequency of the monitor being driven by the DirectDraw object.

HRESULT GetMonitorFrequency(

LPDWORD lpdwFrequency

);

##### Parameters

lpdwFrequency
  Address of the variable that will be filled with the monitor frequency, reported in Hz.

##### Return Values

If the method succeeds, the return value is DD_OK.

If the method fails, the return value may be one of the following error values:

DDERR_INVALIDOBJECT
DDERR_INVALIDPARAMS
DDERR_UNSUPPORTED