如何使用键盘快捷键/绑定来激活tkinter菜单和工具栏？

import tkinter as tk

def on_file_new():
    print("New file selected")

def on_file_open():
    print("Open file selected")

root = tk.Tk()
root.title("Tkinter Menu Example")

# 创建菜单栏
menu_bar = tk.Menu(root)
root.config(menu=menu_bar)

# 创建文件菜单
file_menu = tk.Menu(menu_bar, tearoff=0)
menu_bar.add_cascade(label="File", menu=file_menu)

# 添加菜单项并绑定快捷键
file_menu.add_command(label="New", command=on_file_new, accelerator="Ctrl+N")
file_menu.add_command(label="Open", command=on_file_open, accelerator="Ctrl+O")

# 绑定快捷键到事件
root.bind_all("<Control-n>", lambda event: on_file_new())
root.bind_all("<Control-o>", lambda event: on_file_open())

root.mainloop()

root.bind_all("<Control-n>", lambda event: on_file_new())

file_menu.add_command(label="New", command=on_file_new, accelerator="Ctrl+N")