internal static unsafe partial int mmioDescend( IntPtr hMIO, MMCKINFO *lpck, MMCKINFO *lcpkParent, int flags);
private static extern int mmioDescend(IntPtr hmmio, MMCKINFO *mm, MMCKINFO *lpckParent, uint uFlags);
private static extern int mmioDescendParent(IntPtr hmmio, MMCKINFO *lpck, IntPtr x, uint uFlags);
internal static unsafe partial int mmioAscend(IntPtr hMIO, MMCKINFO *lpck, int flags);