EditorWindowTitleChanger

using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;
using Unity.EditorCoroutines.Editor;
using UnityEngine;
using  UnityEditor;
using Environment = System.Environment;

#if UNITY_EDITOR_WIN
[InitializeOnLoad]
public static class EditorWindowTitleChanger{

    [DllImport("user32.dll", EntryPoint = "SetWindowText")]
    public static extern bool SetWindowText(System.IntPtr hwnd, System.String lpString);

    [DllImport("user32.dll")]

    static extern int GetWindowText(System.IntPtr hWnd, StringBuilder text, int count);

    [DllImport("user32.dll")]
    private static extern System.IntPtr GetActiveWindow();

    public static System.IntPtr GetWindowHandle()
    {
        return GetActiveWindow();
		
    }
    static EditorWindowTitleChanger()
    {
        //Get the window handle.
        CheckChangeTitle();
        EditorCoroutineUtility.StartCoroutineOwnerless(DelayedInitCoroutine());
        // 订阅播放状态变化事件
        EditorApplication.playModeStateChanged += OnPlayModeStateChanged;
    }

    private static void OnPlayModeStateChanged(PlayModeStateChange obj)
    {
        CheckChangeTitle();
    }

    private static void CheckChangeTitle()
    {
        var windowPtr = GetActiveWindow();
        var customTitle = Environment.CurrentDirectory;
        var sb = new StringBuilder(200);
        GetWindowText(windowPtr,sb,200);
        var oldTitle = sb.ToString();
        if (!oldTitle.Contains("|"))
        {
            customTitle = oldTitle + " | " + customTitle;
            SetWindowText(windowPtr, customTitle);
        }
    }

    private static IEnumerator DelayedInitCoroutine()
    {
        // 等待5秒
        yield return new WaitForSeconds(5f);

       CheckChangeTitle();
    }
}
#endif