Problem in feteching time and date.

[Niamita]

Hello everyone
I have facing problem in feteching time and date.The date and time i fetched but the problem is it is not updating with the system time and date. When i run the application it is giving the time and date but if the application is open then the time is not getting update , it update when i again run the application.

One more thing the format of time is in hr.min.sec while i want to fetch it like hr.min.
Thank you for help

[MarekR22]

see example.

and QTime::toString

[Niamita]

i have seen the example and my code is

QTime time = QTime::currentTime();
                       QString timeString = time.toString();
                        label->setText(timeString);
                        startTimer(1000);

QTime time = QTime::currentTime();
                       QString timeString = time.toString();
                        label->setText(timeString);
                        startTimer(1000);

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but the time is not getting update. and the format i also have to change. How can i do all that.

[almboa]

you have to specify a time format in the toString()-method... see documentation.

Where is that snippet of your code? Is it in a slot which is called every second? Did you connect the timeout()-Signal from the QTimer to this slot?
What is the startTimer()-function? Did you write it on your own to call timer.start() or do you use the QObject::startTimer()-function? In the second case you need to reimplement the timerEvent(QTimerEvent *)-function.

[Niamita]

I implement timerEvent(QTimerEvent *)-function and in that function i update the time like

label->setText(timeString);

label->setText(timeString);

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but the time is not getting update.

[wysota]

Do you re-ask for the time in the timer event?

[Niamita]

No i am not reasking time in timer event. i just update the label text in timer event.

[Santosh Reddy]

Check your code against this

class MyClass : QObject {
...
protected:
    void timerEvent(QTimerEvent * event);
}
 
void MyClass::MyClass(QObject * parent)
{
    ...
    mytime = startTimer(1000);
}
 
void MyClass::timerEvent(QTimerEvent * event)
{
    QTime time = QTime::currentTime();
    QString timeString = time.toString("hh:mm");
    label->setText(timeString);
}

class MyClass : QObject {
...
protected:
    void timerEvent(QTimerEvent * event);
}

void MyClass::MyClass(QObject * parent)
{
    ...
    mytime = startTimer(1000);
}

void MyClass::timerEvent(QTimerEvent * event)
{
    QTime time = QTime::currentTime();
    QString timeString = time.toString("hh:mm");
    label->setText(timeString);
}

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[Niamita]

Hi
Thaks for the answer but i am facing with a problem that i set timer at two places one to update paint and one to update time , but both are not working right, they collapsed.
How to handle both of them simultanously.

[Santosh Reddy]

i set timer at two places one to update paint and one to update time

Ok you can use two timers like this

class MyClass : QObject {
...
protected:
    void timerEvent(QTimerEvent * event);
 
private:
    int timeUpdateTimer;
    int paintUpdateTimer;
}
 
void MyClass::MyClass(QObject * parent)
{
    timeUpdateTimer = 0; // Just to be safe.
    paintUpdateTimer = 0;
    ...
    timeUpdateTimer = startTimer(1000);  // Update time every 1 second
    paintUpdateTimer= startTimer(500);  // Update paint every 0.5 second, you can move this to any place in you class
}
 
void MyClass::timerEvent(QTimerEvent * event)
{
    if(timeUpdateTimer == event->timerID())
    {
        QTime time = QTime::currentTime();
        QString timeString = time.toString("hh:mm");
        label->setText(timeString);
    }
    else if(paintUpdateTimer == event->timerID())
    {
        widget->update(); //update paint here
    }
    else
    {
        killTimer(event->timerId()); //Have this, till you clearly understand how QObject, abd QTimers work
    }
}

class MyClass : QObject {
...
protected:
    void timerEvent(QTimerEvent * event);

private:
    int timeUpdateTimer;
    int paintUpdateTimer;
}

void MyClass::MyClass(QObject * parent)
{
    timeUpdateTimer = 0; // Just to be safe.
    paintUpdateTimer = 0;
    ...
    timeUpdateTimer = startTimer(1000);  // Update time every 1 second
    paintUpdateTimer= startTimer(500);  // Update paint every 0.5 second, you can move this to any place in you class
}

void MyClass::timerEvent(QTimerEvent * event)
{
    if(timeUpdateTimer == event->timerID())
    {
        QTime time = QTime::currentTime();
        QString timeString = time.toString("hh:mm");
        label->setText(timeString);
    }
    else if(paintUpdateTimer == event->timerID())
    {
        widget->update(); //update paint here
    }
    else
    {
        killTimer(event->timerId()); //Have this, till you clearly understand how QObject, abd QTimers work
    }
}

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