The QTimer class provides timer signals and single-shot timers. ... int  start  ( int msec, bool sshot = FALSE )  . ... QTimer is very easy to use, create a QTimer, call start () to start it and connect its timeout () to the appropriate slots, then when the time is up it will emit timeout(). ... An alternative to using QTimer is to call QObject::startTimer () for your object and reimplement the QObject::timerEvent () event handler in your class (which must of course inherit QObject ). ...