如何检测OptionMenu或Checkbutton何时发生变化？

import tkinter as tk

def on_option_menu_change(*args):
    print("OptionMenu value changed to:", option_menu_var.get())

def on_check_button_change():
    print("CheckButton value changed to:", check_button_var.get())

root = tk.Tk()

# 创建StringVar变量并与OptionMenu组件关联
option_menu_var = tk.StringVar()
option_menu_var.trace("w", on_option_menu_change)
option_menu = tk.OptionMenu(root, option_menu_var, "Option 1", "Option 2", "Option 3")
option_menu.pack()

# 创建IntVar变量并与Checkbutton组件关联
check_button_var = tk.IntVar()
check_button_var.trace("w", on_check_button_change)
check_button = tk.Checkbutton(root, text="Check me", variable=check_button_var)
check_button.pack()

root.mainloop()