#include "ltmm.h"

C Syntax

HRESULT IltmmMediaInfo_get_SourceFilterClassID(pMediaInfo, pVal)

C++ Syntax

HRESULT get_SourceFilterClassID(pVal)

IltmmMediaInfo *pMediaInfo;

pointer to an interface

BSTR *pVal;

pointer to a string

Retrieves the Class ID string of the source filter used to read and expose the contents of the current source media file.




Pointer to an IltmmMediaInfo Interface.


Pointer to a string to be updated with the class ID string of the source filter.



The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.


Call SysFreeString to free the memory allocated for the string when it is no longer needed.

To get the current source media file, call IltmmMediaInfo::get_SourceFile.

The current source media file, set using IltmmMediaInfo::put_SourceFile, is the file for which the IltmmMediaInfo interface/object gets information. This function must be called before calling any of the other IltmmMediaInfo functions used for retrieving information.

Call IltmmMediaInfo::ResetSource to release the source file when it is no longer needed.

Required DLLs and Libraries


For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.


Win32, x64

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