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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 |
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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.
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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 |