 Important: |
|---|
| This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist. |
The IDirectDrawVideoPort::GetVideoLinemethod retrieves the current line of video being written to the frame buffer.
HRESULT GetVideoLine( LPDWORD lpdwLine );
Parameters
- lpdwLine
- Address of a variable that will be filled with a value that
indicates the video line currently being written to the frame
buffer.
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_VERTICALBLANKINPROGRESS DDERR_VIDEONOTACTIVE Remarks
The value this method retrieves reflects the true video line being written, relative to the field height, before any prescaling occurs.
Requirements
Runs on Versions Declared in Link to Windows CE OS 2.12 or later. Version 2.12 requires DXPAK 1.0 or later. dvp.h ddraw.lib