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QBasicTimer Class Reference
^{[QtCore module]}

The QBasicTimer class provides timer events for objects. More...

Methods

• __init__ (self)
• __init__ (self, QBasicTimer)
• bool isActive (self)
• start (self, int msec, QObject obj)
• stop (self)
• int timerId (self)

This is a fast, lightweight, and low-level class used by Qt internally. We recommend using the higher-level QTimer class rather than this class if you want to use timers in your applications. Note that this timer is a repeating timer that will send subsequent timer events unless the stop() function is called.

To use this class, create a QBasicTimer, and call its start() function with a timeout interval and with a pointer to a QObject subclass. When the timer times out it will send a timer event to the QObject subclass. The timer can be stopped at any time using stop(). isActive() returns true for a timer that is running; i.e. it has been started, has not reached the timeout time, and has not been stopped. The timer's ID can be retrieved using timerId().

The Wiggly example uses QBasicTimer to repaint a widget at regular intervals.

Method Documentation

QBasicTimer.__init__ (self)

Contructs a basic timer.

See also start().

QBasicTimer.__init__ (self, QBasicTimer)

bool QBasicTimer.isActive (self)

Returns true if the timer is running and has not been stopped; otherwise returns false.

See also start() and stop().

QBasicTimer.start (self, int msec, QObject obj)

Starts (or restarts) the timer with a msec milliseconds timeout.

The given object will receive timer events.

See also stop(), isActive(), and QObject.timerEvent().

QBasicTimer.stop (self)

Stops the timer.

See also start() and isActive().

int QBasicTimer.timerId (self)

Returns the timer's ID.

See also QTimerEvent.timerId().