IDirectDraw2::GetVerticalBlankStatus

The IDirectDraw2::GetVerticalBlankStatus method retrieves the status of the vertical blank.

HRESULT GetVerticalBlankStatus(

LPBOOL lpbIsInVB

);

Parameters

lpbIsInVB

Address of the variable that will be filled with the status of the vertical blank. This parameter is TRUE if a vertical blank is occurring, and FALSE otherwise.

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:

Remarks

To synchronize with the vertical blank, use the IDirectDraw2::WaitForVerticalBlank method.

See Also

IDirectDraw2::GetScanLine, IDirectDraw2::WaitForVerticalBlank