QGroupBox does not scale with contents and disappears when resizing the program

[szumial]

Hi! I am using a mixed approach in developement qith Qt: I usually place the widgets using QtDesigner, order them in layouts and add a grid layout to the application / widget and I use CPP to achieve some configuration programatically.

I am having a problem with the QGroupBox with this approach. I created three group boxes and put layouts with widgets into them using QtDesigner. The enabled/disabled and radiobutton properties work great. However, I cant't figure out how to set the size of the group boxes to fit the contents of the layouts I put inside them. What happens is, if I don't stretch the objetcts myself, when the program launches, the contents are cut, not all of what I need is visible.

What I want to achieve? After putting all of the widgets on the page to a grid layout, I want to resize the page to minimum size, which should be sufficient to contain all of the contents without cutting any text or buttons.

Here is my MainWindow in QtDesigner:

And when I do the grid layout and try resizing:

[jsulm]

@szumial Apply a top-level layout to your widget...

[mrjj]

Hi
The red layouts are meant to be used inside other layouts.
They wont snap to the widget and sort of float around.

So they are not the main way to apply a layout to a widget.
It is to right-click the QWidget and use the layout menu.

And yes, it is counterintuitive when all the other widgets are dragged from the right. :)

[szumial]

@mrjj Thanks for the hint! I assumed that I need to create a layout, then drag and drop it inside the QGroupBox. Right-clicking on the group box when it already contains the desired objects and selecting a layout for it works just as expected!

[mrjj]

@szumial
Hi
Yep. Those red layouts are very tempting to use :)

However, its completely the other way,
you place some widgets on another widget, then
apply layout :)
Ps. If you see the layout menu being disabled,
It's because you must place at least one widget.

Also, since you are a Mixer like me
be aware that the Designer sort of flattens the "tree" a bit with layout

so a layout is available via

ui->layoutname->

and not like one might think

ui->widgetname->layoutname

Even one did right-click that widget and assign a layout.