如果声明如下的定时器:
QTimer *timer;
...
timer = new QTimer(this);
QObject::connect(timer, &QTimer::timeout, this, &MainWidget::timer_f);
timer->start(500);
...
void MainWidget::timer_f()
{
...
QTime dieTime = QTime::currentTime().addMSecs(1000);
while (QTime::currentTime() < dieTime)
QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
...
}
即定时器对应的槽函数MainWidget::timer_f()一次执行的时间超过定时器的响应时间,会不会上一个MainWidget::timer_f()没执行完就执行下一个MainWidget::timer_f()?
经过测试好像是得等一次MainWidget::timer_f()执行完才会响应下一个MainWidget::timer_f(),这是否说明Qt的定时器函数不会重入?