public static extern uint LHashValOfNameSys(tagSYSKIND syskind, uint lcid, [In][MarshalAs(UnmanagedType.LPWStr)] string szName);
public static extern int UnRegisterTypeLib(ref GUID libID, ushort wVerMajor, ushort wVerMinor, uint lcid, tagSYSKIND syskind);