The QTimerEvent class contains parameters that describe a timer event. ... QTimerEvent  ( int timerId )  . ... Timer events are sent at regular intervals to objects that have started one or more timers. ... The QTimer class provides a high-level programming interface with one-shot timers and timer signals instead of events. The event handler QObject::timerEvent () receives timer events. ... Constructs a timer event object with the timer identifier set to timerId. ... qevent.h: 1998/07/03 . ...