Question Add (custom)Inspector to custom EditorWindow via CreateGUI

Hi,
I have a problem with displaying an (custom)inspector for a Scriptableobject in my EditorWindow. I searched around the web and found one or two solutions. However, the solutions refer to display via OnGUI(). But i create my EditorWindow via CreateGUI();

Actual State
I'm currently using the TwoPaneSplitView with a leftPane and rightPane as VisualElement. On the left side i have a ListView they lists all Items from a normal List<Item> (Item --> ScriptableObjects). When you click on an Item in this ListView you get on the rightPane the inspector to edit this scriptableobject.

CustomInspector

Code (CSharp):

1. [CustomEditor(typeof(Item))]
2. public class ItemInspector : Editor
3. {
4.  
5.     public override VisualElement CreateInspectorGUI()
6.     {
7.         VisualElement customInspector = new VisualElement();
8.  
9.         VisualElement group = new VisualElement();
10.         group.style.flexDirection = FlexDirection.Row;
11.  
12.         Label label = new Label("Itemname");
13.         TextField field = new TextField();
14.         field.name = "Itemname";
15.         field.bindingPath = "itemName";
16.         field.style.flexGrow = 1;
17.  
18.         group.Add(label);
19.         group.Add(field);
20.  
21.         customInspector.Add(group);
22.  
23.         return customInspector;
24.     }
25. }

With OnGUI()
With OnGUI() this seems to work fine:

Code (CSharp):

1. Editor editor;
2.  
3. private void OnItemSelectionChange(IEnumerable<object> selectedItems)
4. {
5.      editor = Editor.CreateEditor(selectedItems.First() as Item);
6. }
7.  
8. public void OnGUI()
9. {
10.     if (editor != null)
11.     {
12.         editor.DrawDefaultInspector();
13.     }
14. }

With CreateGUI()
With CreateGUI() the editor build my CustomInspector but it seems to has actual no binding. My custom inspector works fine when i use it conventionally via Unity.

Code (CSharp):

1. private void OnItemSelectionChange(IEnumerable<object> selectedItems)
2. {
3.     rightPane.Clear();
4.     Editor e = Editor.CreateEditor(selectedItems.First() as Item);
5.     rightPane.Add(e.CreateInspectorGUI());
6. }

What im doing wrong here?

Unfortunately, this whole issue is still very poorly documented. If you find something at all, then only via displaying using OnGUI. I hope realy, I wouldnt have to change everything to OnGUI. I realy like to code via the CreateGUI-Methods.

btw: What are the difference between displaying things via OnGUI and CreateGUI ? Whats newer?

 

OnGui is what you use to make UI using Unity's old IMGUI system. CreateGUI is to make UI using Unity's new UI Toolkit.

Also if you want to display something like a scriptable object in the inspector, just use inspector element: https://docs.unity3d.com/ScriptReference/UIElements.InspectorElement.html

 

Wow, thank you so much.
Instead of Editor.CreateEditor, I've now done this with the InspectorElement. And it worked. Also with a CustomInspector.

Ah okay. That's probably why it's so poorly documented?