Call this method to move the file pointer of the temporary file.
DWORD dwFrom = FILE_CURRENT
) throw( );
The offset, in bytes, from the starting point given by dwFrom.
The starting point (FILE_BEGIN, FILE_CURRENT, or FILE_END).
Returns S_OK on success, or an error HRESULT on failure.
Calls CAtlFile::Seek. To obtain the current file pointer position, call CAtlTemporaryFile::GetPosition.
See the example for CAtlTemporaryFile::CAtlTemporaryFile.