IDirectDrawVideoPort::GetFieldPolarity
The IDirectDrawVideoPort::GetFieldPolarity method retrieves the polarity of a video field.
HRESULT GetFieldPolarity(
LPBOOL lpbFieldPolarity
);
Parameters
lpbFieldPolarity
Address of a variable that will be set to indicate the current field polarity. This value is set to true if the current video field is the even field of an interlaced video signal 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 |
| DDERR_UNSUPPORTED |
| DDERR_VIDEONOTACTIVE |
QuickInfo
Windows NT: Use version 5.0 or later.
Windows: Use Windows 95 or later. Available as a redistributable for Windows 95.
Windows CE: Unsupported.
Header: Declared in dvp.h.
Import Library: Use ddraw.lib.