CPosPassThru::QueryPreferredFormat

  • 项目

Retrieves the preferred time format to be used by the interface.

HRESULT QueryPreferredFormat(
  GUID* pFormat 
);

Parameters

  • pFormat
    Time format preferred by the interface.

Return Values

Returns the HRESULT value returned from calling IMediaSeeking::QueryPreferredFormat on the connected pin.

Remarks

This member function implements the IMediaSeeking::QueryPreferredFormat method by calling this same method on the upstream filter's output pin.

See the description for IMediaSeeking::IsFormatSupported for a list of available time formats. If the time format returned is not satisfactory, use the IMediaSeeking::IsFormatSupported method to query for supported time formats that you can use.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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