通过

CBaseFilter::QueryFilterInfo

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Microsoft DirectShow 9.0

CBaseFilter::QueryFilterInfo

The QueryFilterInfo method retrieves information about the filter. This method implements the IBaseFilter::QueryFilterInfo method.

Syntax

  HRESULT QueryFilterInfo(
    FILTER_INFO *pInfo
);

Parameters

pInfo

Pointer to a FILTER_INFO structure.

Return Value

Returns S_OK or E_POINTER.

Remarks

This method copies the filter's name from the CBaseFilter::m_pName member variable into the achName member of the FILTER_INFO structure. If m_pName is NULL, the method sets achName to L'\0'.

The method sets the pGraph member of the FILTER_INFO structure equal to the CBaseFilter::m_pGraph member variable, and increments the reference count. The caller must release the interface.

Requirements

**  Header:** Declared in Amfilter.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also