CMediaSample::SetPreroll
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4/8/2010
Sets the preroll property. If TRUE, this sample is for preroll only and should not be displayed.
Syntax
HRESULT SetPreroll(
BOOL bIsPreroll
);
Parameters
- bIsPreroll
Set to TRUE to specify the media sample as a preroll sample, or FALSE otherwise.
Return Value
Returns an HRESULT value.
Remarks
This member function implements the IMediaSample::SetPreroll method.
It sets the value of the m_dwFlags Sample_Preroll flag to the value of bIsPreroll.
Preroll samples are samples that are processed but not displayed, and are located in the media stream before the displayable samples.
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later |