IBaseFilter::QueryFilterInfo method (strmif.h)

Article
02/22/2024

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The QueryFilterInfo method retrieves information about the filter.

Syntax

HRESULT QueryFilterInfo(
  [out] FILTER_INFO *pInfo
);

Parameters

[out] pInfo

Pointer to a FILTER_INFO structure.

Return value

Returns an HRESULT value. Possible values include the following.

Return code	Description
S_OK	Success
E_POINTER	NULL pointer argument

Remarks

This method fills the FILTER_INFO structure with the filter information. On return, if the pGraph member of the FILTER_INFO structure is non-NULL, the IFilterGraph interface has an outstanding reference count. Be sure to release the interface when you are done.

Requirements

Requirement	Value
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