How to do a clock
how to do a digital clock, in which time is upgraded every minute?
Can you elaborate? In short you need to use QLabel + QDateTime + QTimer, it will help you :)
on qt-apps there is an example :
Is QML an option?
This analogue clock example comes with Qt.
You can easily tweak it to become digital. And you can make it look really really cool with a little help from a graphic artist.