The following code illustrates how to pause a device and request notification when the operation is completed.

   /* Pause the device, requesting notification when operation completes */

   #define UP_PAUSE 1

   USHORT usDeviceID;
   HWND hwndMyWindow;
   MCI_GENERIC_PARMS mciGenericParms;        /* Generic message
                                                parms structure   */

                    /* Assign hwndCallback the handle to the PM Window */

   mciGenericParms.hwndCallback = hwndMyWindow;

   mciSendCommand(usDeviceID,      /* Device ID                        */
                   MCI_PAUSE,      /* MCI pause message                */
                   MCI_NOTIFY,     /* Flag for this message            */
                   (PVOID) &mciGenericParms,     /* Data structure     */
                   UP_PAUSE);      /* User parameter to be returned
                                      on notification message          */