Platform SDK: DirectX |
The IDirectDrawVideoPort::GetVideoLine method retrieves the line of video currently being written to the frame buffer.
HRESULT GetVideoLine( LPDWORD lpdwLine );
If the method succeeds, the return value is DD_OK.
If it fails, the method can return one of the following error values:
DDERR_INVALIDOBJECT |
DDERR_INVALIDPARAMS |
DDERR_UNSUPPORTED |
DDERR_VERTICALBLANKINPROGRESS |
DDERR_VIDEONOTACTIVE |
The value that this method retrieves reflects the true video line being written, relative to the field height, before any prescaling occurs.
Windows NT/2000: Requires Windows 2000.
Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
Header: Declared in dvp.h.
Import Library: Use ddraw.lib.