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TDx_Draw_Library v2.00 Component Reference
[
TDx_DrawVideoPort
::GetVideoLine() ] [ next:
GetVideoSignalStatus()
] [ prev:
GetOutputFormats()
]
public:
virtual bool __fastcall GetVideoLine( dword* pLine );
TD
X_
D
RAW
V
IDEO
P
ORT::
G
ET
V
IDEO
L
INE() [ component method ]
Description
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
Line
The Line parameter will reference the current scan line number if this method returns successfully.
See Also
TDx_DrawVideoPort
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