IDirectDraw::GetVerticalBlankStatus (Compact 2013)
3/26/2014
This method retrieves the status of the vertical blank.
Syntax
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 Value
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 |
For more information on these error codes see DirectDraw Return Values.
Remarks
To synchronize with the vertical blank, use the IDirectDraw::WaitForVerticalBlank method.
Requirements
Header |
ddraw.h |
Library |
ddraw.lib |
See Also
Reference
IDirectDraw
DirectDraw Reference
DirectDraw Interfaces
IDirectDraw::GetScanLine
IDirectDraw::WaitForVerticalBlank