ScriptReference/EditorGUI.EndChangeCheck

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ScriptReference/EditorGUI.EndChangeCheck

https://docs.unity3d.com/ScriptReference/EditorGUI.EndChangeCheck.html

[mvi]

Note that Begin/EndChangeCheck can be nested. For example:

string foo = "";  
int bar = 0;  
  
EditorGUI.BeginChangeCheck();  
  
foo = EditorGUILayout.TextField(foo);  
  
EditorGUI.BeginChangeCheck();  
  
bar = EditorGUILayout.IntField(bar);  
  
if (EditorGUILayout.EndChangeCheck())  
{  
    Debug.Log("Bar changed");  
}  
  
if (EditorGUILayout.EndChangeCheck())  
{  
    Debug.Log("Foo or Bar changed");  
}

Also, as mentioned in the docs this is based on GUI.changed going from false at the time of BeginChangeCheck to true at the time of EndChangeCheck. Built in Unity controls will mark this flag already, but if you need it with your own controls or with a button you can set GUI.changed = true; yourself.