object

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

• Device type
  
• Device name
  
• Filename
  
• Alias
ID
Returns the disc ID if the device supports this function, otherwise, it returns 0. The value returned is a binary value.
PRODUCT
Returns the product name and model of the current audio device.
UPC
Returns the disc UPC code (serial number) if the device supports this function, otherwise, it returns 0. The value returned is a binary value.
WAIT
The command is executed synchronously. The function waits until the requested action is complete before returning to the application.
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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