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Sets the file into which actions taken in attempting to perform an operation are logged.
HRESULT SetLogFile( HANDLE hFile );
Parameters
- hFile
- Handle to the log file.
Return Values
Returns an HRESULTvalue that depends on the implementation. HRESULTcan be one of the following standard constants, or other values not listed.
E_FAIL Failure. E_POINTER Null pointer argument. E_INVALIDARG Invalid argument. E_NOTIMPL Method isn't supported. S_OK or NOERROR Success. Remarks
The hFileparameter must be an open file handle. After calling this method with a valid file handle, actions taken by IGraphBuildermethods when attempting to build a filter graph are logged to this file. This is intended to help you determine the cause of any failure to automatically build a filter graph.