EditorWindow.mouseOverWindow

Description

The EditorWindow currently under the mouse cursor. (Read Only)

mouseOverWindow can be null if there is no window under the cursor.

Additional resources: focusedWindow.

[UnityEditorMouseOverWindow.png]
Move the mouse over other Unity windows to automatically focus them.

// The window appears in front of the Editor.
// The window shows the type of a Unity object the cursor is over.

using UnityEngine;
using UnityEditor;
using UnityEngine.UIElements;

public class MouseOverWindowExample : EditorWindow
{
    [MenuItem("Examples/Mouse Over Example")]
    static void Init()
    {
        GetWindow<MouseOverWindowExample>("mouseOver");
    }

    Label m_Label;

    void CreateGUI()
    {
        m_Label = new Label();
        rootVisualElement.Add(m_Label);
    }

    void Update()
    {
        EditorWindow window = EditorWindow.mouseOverWindow;
        if (window != null)
            Debug.Log(window.ToString());
        string windowName = window != null ? window.ToString() : "(none)";
        m_Label.text = $"Mouse over: {windowName}";
    }
}