Very simple example how to use UIToolkit with code

Hi is there a very basic code example for using UIToolkit which shows how to associate a script with the Panel or whatever it needs to attach to? I've done the QuickTool tutorial which seems to be very much what I'm looking for, but it's for editor mode and launches via a menu hook. Any tips are appreciated.

Thanks,

 

I think I sorted it out. I added a UIDocument to my project and added a MonoBehaviour script to that. In that script I added a private OnEnable like so:

Code (CSharp):

1.     private void OnEnable()
2.     {
3.         var r = GetComponent<UIDocument>();
4.         VisualElement ve = new VisualElement();
5.         ve.style.backgroundColor = new StyleColor(Color.green);
6.         ve.StretchToParentSize();
7.         r.rootVisualElement.Add(ve);
8.     }

And voila the screen turned green. Not sure it's right but it should let me test things out some more.