IMediaSample::IsPreroll method (strmif.h)
The IsPreroll method determines if this sample is a preroll sample. A preroll sample should not be displayed.
Syntax
HRESULT IsPreroll();
Return value
Returns S_OK if the sample is a preroll sample. Otherwise, returns S_FALSE.
Remarks
Preroll samples are processed but not displayed. They are located in the media stream before the displayable samples.
Requirements
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |