Question UIElement Property-Drawer in IMGUI Inspector "No GUI Implemented"

Hi all,
So I tried to create a property drawer using

CreatePropertyGUI

and use it in my project. If I try to use it in an inspector driven by IMGUI I get the "No GUI Implemented" error. I've read already read that It's probably because of the IMGUI/UiElement Mix. Is there any solution yet? I'll provide my scripts and a simple example project. Please mind that for the real one I'm bound to Unity 2020.16.3.

Code (CSharp):

1. public class BaseClass : MonoBehaviour
2. {
3.     [SerializeField] private List<Property> Properties;
4. }

Code (CSharp):

1. [Serializable]
2. public class Property
3. {
4.     [SerializeField] private bool isOn;
5.     [SerializeField] private string name;
6.     [SerializeField] private float length;
7. }

Code (CSharp):

1. [CustomEditor(typeof(BaseClass))]
2. public class BaseInspector : Editor
3. {
4.     public override void OnInspectorGUI()
5.     {
6.         DrawDefaultInspector();
7.     }
8. }

Code (CSharp):

1. [CustomPropertyDrawer(typeof(Property))]
2. public class PropertyDrawer : UnityEditor.PropertyDrawer
3. {
4.     public override VisualElement CreatePropertyGUI(SerializedProperty property)
5.     {
6.         var container = new VisualElement();
7.  
8.         var isOnField = new PropertyField(property.FindPropertyRelative("isOn"));
9.         var nameField = new PropertyField(property.FindPropertyRelative("name"));
10.         var lengthField = new PropertyField(property.FindPropertyRelative("length"));
11.      
12.         container.Add(isOnField);
13.         container.Add(nameField);
14.         container.Add(lengthField);
15.  
16.         return container;
17.     }
18. }

 

the thread with all the answers: Property Drawers. Specifically this code sample should make it easy to implement.

TL;DR: Your editor/editorwindow currently needs to be UIElements for UIElements Property Drawers to work.

 

Thanks for the reply, that thread was really helpful!