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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