How can I disable the ability to delete gameobjects in scene view?

Question

I have gameobjects that are created from a "create" menu/editor script - when you create these objects, materials (and other things) can be created depending on which options are enabled on the item.

I'd like to add a "Delete This Item" GUILayout.Button which will replace the typical "delete" key functionality when you have a gameobject selected (so that it removes all materials/etc that may have also been created).

Currently. when you delete the object from the scene view, all materials/etc remain in the folders they were added to via AssetDatabase.CreateAsset

Is there any was "lock" or otherwise disable the delete key function on actively selected gameobjects in the scene view? Thanks

Answer 1

Try this:

 [CustomEditor(typeof(YourComponentType))]
 public class InterceptKeyboardDeleteEditor : Editor
 {
     // NOTE: you can still delete GameObjects by right click and select delete in Hierarchy view
    
     protected virtual void OnEnable()
     {
         EditorApplication.hierarchyWindowItemOnGUI += OnHierarchyGUI;
     }
 
     protected virtual void OnDisable()
     {
         EditorApplication.hierarchyWindowItemOnGUI -= OnHierarchyGUI;
     }
 
     // disable the ability to delete GameObjects in Scene view
     protected virtual void OnSceneGUI()
     {
         InterceptKeyboardDelete();
     }
 
     // disable the ability to delete GameObjects in Hierarchy view
     protected virtual void OnHierarchyGUI(int instanceID, Rect selectionRect)
     {
         InterceptKeyboardDelete();
     }
 
 
     // intercept keyboard delete event
     private void InterceptKeyboardDelete()
     {
         var e = Event.current;
         if (e.keyCode == KeyCode.Delete)
         {
             //e.Use(); // warning
             e.type = EventType.Used;
         }
     }
 }

See this for more details: https://arvin.blog.csdn.net/article/details/106380122

How can I disable the ability to delete gameobjects in scene view?

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