TDx_DrawVideoPort::GetVideoLine() Reference

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TDx_Draw_Library v1.90 Component Reference

Component: TDX_DRAWVIDEOPORT::GETVIDEOLINE()

[ TDx_DrawVideoPort ] [ next: GetVideoSignalStatus() ] [ prev: GetOutputFormats() ]

public:
virtual bool __fastcall GetVideoLine( dword* pLine );

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DESCRIPTION

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The TDx_DrawVideoPort::GetVideoLine method will retrieve the scan line number currently being written to the frame buffer.

This number is the true video line, relative to the field height, before prescaling.

If the method call fails, the OnError event will be triggered with one of the following values:
DDERR_INVALIDOBJECT
DDERR_INVALIDPARAMS
DDERR_UNSUPPORTED
DDERR_VERTICALBLANKINPROGRESS
DDERR_VIDEONOTACTIVE

PARAMETERS

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Line
The Line parameter will reference the current scan line number if this method returns successfully.