QT 对话框中动态显示系统时间

#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);

}

private slots:

void displayTime();