What the widgets I have to use to create application like on the added photo

[Vadym]

quntity of rectangles will change and colour will depend on temperature from sensors

12554

[d_stranz]

You can use QProgressBar for all of the rectangles, I think. You could also look on the inqlude (https://inqlude.org/) and linux-apps (https://www.linux-apps.com/) web sites for libraries that contain similar widgets.

[Vadym]

maybe not good example, my rectangle have to be full painted not level or part, change colour only

[d_stranz]

You can still use QProgressBar, just set the value to 100% of the range. If all you want is a plain rectangle with different background color, then you can use a QWidget and simply change the QPalette Window color role to the color you want.

If you don't want something like the picture you posted, then what *do* you want? Why post a picture of something that is different from what you want, and then ask us how to make something that looks like the picture? You waste our time.

[Vadym]

I have an idea to use scrolArea then insert QWidgets and in every QWidget paint (using QPainter) rectangle or polygon even .
but I do not know how to write code to paint figure in separate QWidget.....will be good it or not ? sorry for maybe stupid questions but I new in qt, sthanks

[d_stranz]

Your Qt distribution comes with a huge set of example programs, including many on painting widgets (https://doc.qt.io/qt-5/examples-painting.html). Why don't you study those and understand how it works before trying to do something yourself?