rc (ULONG)

      Return codes indicating success or type of failure:

      MCIERR_SUCCESS

        MMPM/2 command completed successfully.
      MCIERR_OUT_OF_MEMORY
        System out of memory.
      MCIERR_INVALID_DEVICE_ID
        Invalid device ID given.
      MCIERR_MISSING_PARAMETER
        Missing parameter for this command.
      MCIERR_DRIVER
        Internal MMPM/2 driver error.
      MCIERR_INVALID_FLAG
        Invalid flag specified for this command.
      MCIERR_MISSING_FLAG
        Flag missing for this MMPM/2 command.
      MCIERR_FLAGS_NOT_COMPATIBLE
        Flags not compatible.
      MCIERR_INSTANCE_INACTIVE
        Instance inactive.
      MCIERR_INVALID_CONNECTOR_INDEX
        Invalid connector index.
      MCIERR_INVALID_CONNECTOR_TYPE
        Invalid connector type given.
      MCIERR_UNSUPPORTED_CONN_TYPE
        Connector type is not supported by this device.
      MCIERR_CANNOT_MODIFY_CONNECTOR
        Cannot enable or disable this connector.

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