How display Time (hh:mm:ss) not statically?

[enaud84]

Hi all,
I'm studing QT only for fun..
i would like to build a little application with a label wich shows the exact time that flows like this:

http://time.is/it/

I writed:
@
ui->label->setText(QTime::currentTime().toString("h:mm:ss "));
@

but I get only the time instant, and the second does not run ..
the time is still!

how can I correctly display the time? like this : http://time.is/it/???

thanks for help

[andre]

Put that line in a function, and make that function a slot. Now, from your constructor, create a [[doc:QTimer]] instance, and connect the timeout() signal of the timer you just created with the function that updates the time in the label. Voila!

[JohanSolo]

I don't think the text of a QLabel is meant to automatically change by itself. The QTime::toString gives the QString corrsponding to the input QTime value. I guess if you want a QLabel that changes, you'll have to use signal/slots to rewrite your QLabel every second (i.e. every time the QTime changes).

[andre]

Off-topic: Note that in QML, such a setup would work: tell a component to display the current time, and it will always display the current time, even while the time changes. Declarative programming is cool that way! :-)

[enaud84]

thanks,
how connect this:
@
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(showTime()));
timer->start(1000);
@
at my label?

Edit: please use @ tags around code sections; Andre

[andre]

Your method showTime() needs to contain the line you posted in your first message, and the function needs to be declared a slot in your header.

[enaud84]

i've resolved with a new function! thanks ANDRE!!!!!

[andre]

You're welcome, have fun learning Qt!