rc (ULONG)

      Return codes indicating success or type of failure:

      MCIERR_SUCCESS

        If the function succeeds, 0 is returned.
      MCIERR_DUPLICATE_ALIAS
        An alias is already in use.
      MCIERR_GROUP_COMMAND
        An unsupported GROUP command is sent to a group.
      MCIERR_FLAGS_NOT_COMPATIBLE
        Flags cannot be used together.
      MCIERR_ID_ALREADY_IN_GROUP
        A device ID or alias references an instance already in another group.
      MCIERR_INVALID_GROUP_ID
        An invalid group ID is passed.

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