How to call this kind of UI?

[IknowQT]

I am trying to implement a UI that expands or contracts variably when the screen is clicked.
I am using QWidget and trying to implement it.
What is the name of this UI and how can it be implemented?

[mrjj]

Hi
Well, it's basically just an expandable widget.
Sometimes they are called collapsable widgets/controls.

You could be inspired by this
https://github.com/chrisaverage/burger-menu
Its will expand/collapse.

[J.Hilk]

the repo linked by @mrjj is probably well suited for your case

but for your information:
the actual name is "drawer menu".
In QWidgets there is no default widget with that behaviour, but QML does have that component ready to use.