QT 对话框中动态显示时间

#include <QDateTime>

#include <QTimer>

Dialog::Dialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::Dialog)

{

    ui->setupUi(this);

    //显示时间

    QTimer *timer = new QTimer(this);

    displayTime();

    connect(timer, SIGNAL(timeout()), this, SLOT(displayTime()));

    timer->start(1000);

}

void Dialog::displayTime()

{

    QDateTime dt;

    QTime time;

    QDate date;

    dt.setTime(time.currentTime());

    dt.setDate(date.currentDate());

    QString currentDate = dt.toString("yyyy:MM:dd:hh:mm:ss");

    ui->timeLabel_3->setText(currentDate);

}

声明：

private slots:

    void displayTime();

QT 对话框中动态显示系统时间