IBaseFilter::QueryFilterInfo

Article
11/18/2015

A version of this page is also available for

4/8/2010

This method returns information about the filter.

Syntax

HRESULT QueryFilterInfo(
  FILTER_INFO* pInfo
);

Parameters

pInfo
[out] Pointer to a FILTER_INFO structure.

Return Value

Returns an HRESULT value that depends on the implementation.

HRESULT can be one of the following standard constants or other values not listed.

Value	Description
E_FAIL	Failure.
E_POINTER	Null pointer argument.
E_INVALIDARG	Invalid argument.
E_NOTIMPL	Method is not supported.
S_OK or NOERROR	Success.

Remarks

The FILTER_INFO structure is defined as follows.

typedef struct _FilterInfo  {
    [string] WCHAR achName[MAX_FILTER_NAME]; // allowed to be null
    IFilterGraph * pGraph;                   // null if not part of graph
    } FILTER_INFO ;

On return, if the pGraph member of the FILTER_INFO structure is non-NULL, it will have an outstanding reference count and should be released when the interface is no longer needed.

Requirements

Windows Embedded CE	Windows CE 2.12 and later
Windows Mobile	Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for 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

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