CODEWITHSUNDEEP
qttimesignalsslot
pandreym
pandreym

Reputation: 137

Display actual time in a Qt program

What is a simple way to display the actual time (Hh: mm: ss) in MainWindow's title ? Using slots and signals technology.

Upvotes: 1

Views: 6168

Answers (2)

Boris Dalstein
Boris Dalstein

Reputation: 7748

I'm building my answer on the one provided by Riateche. Instead of using a user defined QTimer and connecting signals/slots, you can use the provided timerEvent() of any QObject. It will basically do the same under the hood, but save you a lot of typing. This would look like this:

class MainWindow : public QMainWindow
{
public:
    MainWindow();

protected:
    void timerEvent(QTimerEvent *event);
};

MainWindow::MainWindow()
{
     startTimer(1000);   // 1-second timer
}

void MainWindow::timerEvent(QTimerEvent * event)
{
    setWindowTitle(QTime::currentTime().toString("hh:mm:ss"));
}

Upvotes: 5

Pavel Strakhov
Pavel Strakhov

Reputation: 40502

Create a QTimer with 1 sec interval (or e.g. 100 msec for more accuracy), connect its timeout signal to your slot. In the slot get the current time using QTime::currentTime() static function, convert it to string using toString and assign it to a GUI element (e.g. a label).

Upvotes: 3

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