object

      Object associated with this media control interface command. The object can be one of the following:

      • Device type
      • Device name
      • Filename
      • Alias
      While other capabilities are defined for specific devices and device types, the following keywords can always be specified:
      CAN EJECT
        Returns TRUE if the device can eject the media.
      CAN PLAY
        Returns TRUE if the device can play.
      CAN RECORD
        Returns TRUE if the device supports recording.
      CAN SAVE
        Returns TRUE if the device can save data.
      CAN LOCKEJECT
        Returns TRUE if the device can disable the manual ejection of the media.
      CAN SETVOLUME
        Returns TRUE if the device supports software control of volume level.
      COMPOUND DEVICE
        Returns TRUE if the device requires an element name.
      DEVICE TYPE
        Returns one of the following:

        • ampmix
        • cdaudio
        • cdxa
        • digitalvideo
        • overlay
        • sequencer
        • videodisc
        • waveaudio
        • other
        HAS AUDIO
          Returns TRUE if the device supports audio playback.
        HAS VIDEO
          Returns TRUE if the device supports video playback.
        MESSAGE command
          Returns TRUE if the device supports the command specified by command. Following are the commands you can query:

          ACQUIRE

            RECORD
          CAPABILITY
            RELEASE
          CLOSE
            RESUME
          CONNECTION
            SAVE
          CONNECTOR
            SEEK
          CUE
            SET
          ESCAPE
            SETCUEPOINT
          GROUP
            SETPOSITIONADVISE
          INFO
            SPIN
          LOAD
            STATUS
          MASTERAUDIO
            STEP
          OPEN
            STOP
          PAUSE
            SYSINFO
          PLAY
          PREROLL TIME
            Returns the deterministic or maximum notified preroll time in MMTIME units. A value of 0 for a notified preroll device indicates the preroll time is not bounded.
          PREROLL TYPE
            Returns the preroll characteristics of the device. Returns notified if the preroll time for the device is variable. Returns deterministic if the prerolled time for the device is fixed. Returns none if the device does not support preroll.
          USES FILES
            Returns TRUE if the device requires a file path name.
          WAIT
            The command is executed synchronously. The function waits until the requested action is complete before returning to the application. The WAIT keyword must be specified in order to receive return string information.
          NOTIFY
            The command is executed asynchronously, allowing control to be returned immediately to the application. When the requested action is complete, an MM_MCINOTIFY message is sent to the application window procedure.

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