Each time an object is (or a group of objects are) created, renamed, parented, unparented or destroyed this callback is raised.
See Also: EditorWindow.OnHierarchyChange.
using UnityEditor;
using UnityEngine; public class ExampleCode {
[MenuItem ("Example/Hierarchy Window Changed")]
static void Example () {
EditorApplication.hierarchyWindowChanged += ExampleCallback;
}
static void ExampleCallback () {
Object[] all = Resources.FindObjectsOfTypeAll (typeof (Object));
Debug.Log ("There are " + all.Length + " objects at the moment.");
}
}