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4/8/2010

This method returns information about the filter.

Syntax 

HRESULT QueryFilterInfo(
  FILTER_INFO* 
pInfo
);

Parameters

pInfo

[out] Pointer to a FILTER_INFOstructure.

Return Value

Returns an HRESULTvalue that depends on the implementation.

HRESULTcan 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_INFOstructure is defined as follows.

Copy Code 
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 pGraphmember of the FILTER_INFOstructure 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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