HCELL_INDEX
CmpFindSubKeyByNumber(
      PHHIVE Hive,
      PCM_KEY_NODE Node,
      ULONG Number
  );

Routine Description:

    Find the Number'th entry in the index, starting from 0.

Arguments:

    Hive - pointer to hive control structure for hive of interest

    Node - pointer to key body which is parent of child of interest

    Number - ordinal of child key to return

Return Value:

    Cell of matching child key, or HCELL_NIL if none or error.