Question

Need to know UP/DOWN arrow button is clicked while implementing QDateTimeEdit in Qt?

I want to catch which button UP/DOWN clicked while changing the time.
Please tell me the function which catches this signal.

Please reply me fast.

Answer 1

That is quite simple.

To catch that you must create your own class inherited from QDateTimeEdit and reimplement
stepBy(int steps) function.

So, your class will looks like:

class MyDateTime : public QDateTimeEdit
{
    Q_OBJECT
public:
    MyDateTime(QWidget *parent = 0);

public slots:
    void stepBy(int steps);
};

And implementation of void stepBy(int steps):

void MyDateTime::stepBy(int steps)
{
    // here you can do your own business
    if (steps!=0)
        qDebug( steps > 0
                ? "going up"
                : "going down" );
    // we must call it to provide QDateTimeEdit's
    // functionality
    QDateTimeEdit::stepBy(steps);
}

Good luck!