Once you have obtained a platform-specific file handle with NWDSOpenStream, you must open it with the ANSI call _open_osfhandle. After that, just manage the file as you would any other on your platform.

The prototype for _open_osfhandle is shown below:

 int _open_osfhandle (long ofshandle, int flags );

fileHandle The file handle to open.

flags The mode/s for which to open the file.