Applications can perform event synchronization by taking an action at a specified point during the playback of a data object. There are two ways an application can do this:

• The application can request to be notified when a specified point in playback is encountered by sending the MCI_SET_CUEPOINT message to the multimedia system. When this cue point is encountered, the multimedia system sends an MM_MCICUEPOINT message to the application.

• The application can request notification on a periodic basis, based on time or position, by sending the MCI_SET_POSITION_ADVISE message to the multimedia system. As each time period (or position) specified passes, the multimedia system sends an MM_MCIPOSITIONCHANGE message to the application.