Sets an alarm that notifies a user of an appointment and optionally launches a program. The appointment must have the input focus and must be future.
AFTKN_SET_ALARM or 595
VOID AlarmSet(WORD HoursBefore; WORD MinutesBefore [ANSISTRING ProgramToLaunch])
Number of hours before the appointment to display the alarm.
Number of minutes before the appointment to display the alarm.
(Optional)
This token requires an Appointment Item view to be active.