QBasicTimer Class▲
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Header: QBasicTimer
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qmake: QT += core
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Group: QBasicTimer is part of Event Classes
Detailed Description▲
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.
See Also▲
See also QTimer, QTimerEvent, QObject::timerEvent(), Timers, Wiggly Example
Member Function Documentation▲
QBasicTimer::QBasicTimer()▲
QBasicTimer::~QBasicTimer()▲
Destroys the basic timer.
bool QBasicTimer::isActive() const▲
Returns true if the timer is running and has not been stopped; otherwise returns false.
See Also▲
void QBasicTimer::start(int msec, QObject *object)▲
Starts (or restarts) the timer with a msec milliseconds timeout. The timer will be a Qt::CoarseTimer. See Qt::TimerType for information on the different timer types.
The given object will receive timer events.
See Also▲
See also stop(), isActive(), QObject::timerEvent(), Qt::CoarseTimer
void QBasicTimer::start(int msec, Qt::TimerType timerType, QObject *obj)▲
This is an overloaded function.
Starts (or restarts) the timer with a msec milliseconds timeout and the given timerType. See Qt::TimerType for information on the different timer types.
obj will receive timer events.
See Also▲
See also stop(), isActive(), QObject::timerEvent(), Qt::TimerType