QTimer *timer = new QTimer(this); connect(timer, &QTimer::timeout, this, &MyClass::onTimerTimeout); timer->start(1000); // start timer with a 1000ms interval
QTimer *timer = new QTimer(this); connect(timer, &QTimer::timeout, this, [](){ qDebug() << "Timer timed out."; }); timer->setSingleShot(true); timer->start(5000); // start timer with a 5000ms interval (single shot)
QTimer *timer = new QTimer(this); connect(timer, &QTimer::timeout, this, [this](){ if (m_progress >= 100) timer->stop(); else { m_progress += 10; emit progressChanged(m_progress); } }); timer->start(1000); // start timer with a 1000ms intervalIn this example, a timer is created and connected to a lambda function that updates a progress variable and emits a signal to notify other parts of the program about the progress. The timer will trigger every 1000ms (1 second), and will stop once the progress has reached 100. The QTimer class is part of the Qt Core module, which is included in the Qt library. You can use it by including the `QTimer` header and linking with the Qt Core library.