IDirectDraw4::GetVerticalBlankStatus
The IDirectDraw4::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:
| DDERR_INVALIDOBJECT |
| DDERR_INVALIDPARAMS |
Remarks
To synchronize with the vertical blank, use the IDirectDraw4::WaitForVerticalBlank method.
Requirements
| Runs on | Versions | Declared in | Link to |
|---|---|---|---|
| Windows CE OS | 2.12 or later. Version 2.12 requires DXPAK 1.0 or later. | ddraw.h | ddraw.lib |
See Also
IDirectDraw4::GetScanLine, IDirectDraw4::WaitForVerticalBlank
Last updated on Tuesday, July 13, 2004
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