How to customize the elements of a scrollbox widget?

[jdion.simleader]

Hello, I am currently experimenting with the tool in order to be able to create an internal library for the UI for the company I work for. I didn't have too much difficulty integrating the interactable buttons, but it's a little more complicated for the scrollbox widget.

I searched the documentation, but found nothing that mentioned how to customize scrollbox widget images, arrows and the background image.

Could anyone enlighten me on the procedures to follow?

 

Here are some examples that I would like to be able to reproduce with scrollbox widgets:

[silent]

jdion.simleader

Current built-in GUI customization is quite limited. You can unpack <Project>/data/core.ung and modify textures of the <Project>/data/core/gui directly in order to make them look differently.

Another option is to use a WidgetCanvas and implement all the rendering manually (including all the buttons, text areas and so on). That's highly customizable approach, but apparently is much more complex.

And third solution would be to integrate a 3rd party UI rendering library (for example, NoesisGUI).

Thanks!

[jdion.simleader]

I was wondering: Why aren't there many UI build-in tools in the engine? Compared to other engines (Unreal & Unity)