C# Definition:

[ComImport, Guid("0000000c-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]

public interface IStream

{

      void Read([Out, MarshalAs(UnmanagedType.LPArray, SizeParamIndex=1)] byte[] pv, int cb, IntPtr pcbRead);
      void Write([MarshalAs(UnmanagedType.LPArray, SizeParamIndex=1)] byte[] pv, int cb, IntPtr pcbWritten);
      void Seek(long dlibMove, int dwOrigin, IntPtr plibNewPosition);
      void SetSize(long libNewSize);
      void CopyTo(IStream pstm, long cb, IntPtr pcbRead, IntPtr pcbWritten);
      void Commit(int grfCommitFlags);
      void Revert();
      void LockRegion(long libOffset, long cb, int dwLockType);
      void UnlockRegion(long libOffset, long cb, int dwLockType);
      void Stat(out STATSTG pstatstg, int grfStatFlag);
      void Clone(out IStream ppstm);

}

User-Defined Types:

STATSTG

Notes:

None.