IBaseFilter::QueryFilterInfo (Compact 2013)

3/26/2014

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

Header	dshow.h
Library	Strmiids.lib

See Also

Reference

IBaseFilter Interface