QT的定时器

一、QT的定时器事件

#include <QTimerEvent>

Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{
    ui->setupUi(this);

    this->timer1 = this->startTimer(1000);
    this->timer2 = this->startTimer(2000);
}

Widget::~Widget()
{
    delete ui;
}

void Widget::timerEvent(QTimerEvent* e)
{
    static int secondTime1 = 1;
    static int secondTime2 = 1;

    if (e->timerId() == timer1)
    {
        ui->label->setText(QString::number(secondTime1));
        secondTime1++;
    }

    if (e->timerId() == timer2)
    {
        ui->label_2->setText(QString::number(secondTime2));
        secondTime2++;
    }

}

二、定时器类

#include <QTimer>

	QTimer* timer3 = new QTimer(this);
    timer3->start(500);
    connect(timer3,&QTimer::timeout,this,[=](){
        static int secondTime3 = 1;
        ui->label_3->setText(QString::number(secondTime3));
        secondTime3++;
    });
    connect(ui->pushButton,&QPushButton::clicked,this,[=](){
        timer3->stop();
    });