@ricardovaras_99 said in What library should I use for animation in Qt Widgets Application?:
And I want to simulate water level increasing on a tank.
Do you want to animate the water level (in other words, make the level rise or fall at a specific speed in real time)? Or do you just want to display the water level? (in other words, make the picture show the latest level)?
If you want the latter, have a look at the Qt Quick Coffee Machine demo:Video: https://resources.qt.io/videos/built-with-qt-qt-quick-coffee-machine-demo-qtws17 Code: https://doc.qt.io/qt-5/qtdoc-demos-coffee-example.html