rc (ULONG)

      Return codes indicating success or type of failure:

      MCIERR_SUCCESS

        Command completed successfully.
      MCIERR_INVALID_DEVICE_ID
        Invalid device ID given.
      MCIERR_MISSING_PARAMETER
        Required parameter is missing.
      MCIERR_INVALID_FLAG
        Invalid flag specified for this command.
      MCIERR_UNSUPPORTED_FLAG
        Flag is not supported by this device.
      MCIERR_INSTANCE_INACTIVE
        The device ID is currently inactive. Issue MCI_ACQUIREDEVICE to make device context active.
      MCIERR_INVALID_CALLBACK_HANDLE
        Given callback handle is invalid.

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