Editor.OnSceneGUI never called.

Question

I'm trying to understand why OnEditorGUI is never called on my custom Editor subclass.

the code is as follow:

 using UnityEngine;
 using UnityEditor;
 
 [CustomEditor(typeof(Bezier))]
 public class BezierEditor : Editor
 {
     public override void OnInspectorGUI ()
     {
         base.OnInspectorGUI ();
         Debug.Log("on inspector gui");
     }
     
     public void OnSceneGUI()
     {
         Debug.Log("on scene gui");
     }
 }

OnInspectorGUI is properly called and the debug show for it, but not for OnSceneGUI. I'm using the latest unity version (3.4.1f5)

Answer 1

Answer by huulong · Jan 06, 2017 at 11:28 AM

Not a definitive fix, but if it happens again you can reset the editor Layout with the top-right button (for instance to Default).

I had the same issue with my custom editor and a tilemap plugin that stopped displaying its the tiling tools. Closing and restarting the editor didn't solve it. Resetting the layout solved it.

Add comment · Show 6 · Share

turbanov · Oct 31, 2017 at 05:45 PM 0

Share

Strangely this actually helped me. Weird...

smallbit · Mar 29, 2018 at 03:51 AM 0

Share

Still working in 2017.3, you saved me a lot of trouble Sir !

xtyler · Apr 26, 2020 at 06:27 AM 1

Share

This worked for me, and then it happened again a short time later! I found that resetting the layout automatically turns Gizmos visibility back on, as per @$$anonymous$$usapKahraman comment. Resetting the whole Editor Layout isn't necessary.

TL;DR Editor.OnSceneGUI only runs when scene view Gizmos is toggled on.

jBelz · Sep 21, 2020 at 10:02 PM 0

Share

Had the same bug, but this workaround still did the trick for me in Unity 2019.3.15.

huulong · Jun 04, 2021 at 08:36 PM 0

Share

Wow, I had the same issue with Unity 2021 this week and I've just found my own answer that I had totally forgotten about! And it still works!

In the meantime I sent a bug report to Unity, so now they have a sample project with a failing layout to work on. Hopefully they can fix the root of the issue even without details of how I broke the layout.

@xtyler if it happens to you regularly, try to spot the kind of GUI warnings that appear in the editor, I may add them to my bug report as extra info. Otherwise yes, you should only reset the layout if the Gizmo toggle doesn't work (in my case toggling it off and on again didn't fix the issue)

Show more comments

Answer 2

Answer by MusapKahraman · Oct 29, 2019 at 05:17 PM

Turning the visibility of Gizmos on in the scene view worked for me. I had turned them off for some reason and OnSceneGUI stopped being called.

Add comment · Show 1 · Share

onetimepad · 2 days ago 0

Share

Yes. Problem is with Gizmos being turned off. Reopening scene window or resetting the editor Layout also reset Gizmos settings in scene window to default on.

Answer 3

Answer by Sarseth · Jan 12, 2016 at 09:33 PM

Old question. But maybe someone find same issue. When I have "DEBUG" enabled on inspector, onGUI does not work for me either. I must disable it. I'm guessing it's a bug, cause why it would stop working?

Add comment · Show 3 · Share

giresharu · Sep 09, 2016 at 09:35 AM 0

Share

I found It continue working when I move my mouse on the scene window. BTW,it still won't work when I just put the mouse on the scene window but not move it. I don't know how to solve it. It has been FIVE year,I can't believe it is a bug. $$anonymous$$aybe there is something wrong with our codes,but we don't know.

Bunny83 giresharu · Sep 09, 2016 at 03:02 PM 0

Share

The editor is completely event driven. OnSceneGUI is only called when it should process an event. You can call SceneView.RepaintAll(); to force a repaint of all open sceneviews. Please stop posting comments on this question since you've asked your own

Bunny83 · Sep 09, 2016 at 02:59 PM 0

Share

That's not a bug. when you switch the inspector into debug mode, no custom editor will be drawn. Not even the built-in custom editors. The debug mode is just for debugging.

Editor.OnSceneGUI never called.

3 Replies

Your answer

Follow this Question

Related Questions