当鼠标被按下并悬停在多个tkinter按钮上时，如何更改它的状态？

import tkinter as tk

def on_enter(event):
    event.widget.config(state=tk.ACTIVE)

def on_leave(event):
    event.widget.config(state=tk.NORMAL)

root = tk.Tk()

button1 = tk.Button(root, text="Button 1", state=tk.NORMAL)
button1.bind("<Enter>", on_enter)
button1.bind("<Leave>", on_leave)
button1.pack()

button2 = tk.Button(root, text="Button 2", state=tk.NORMAL)
button2.bind("<Enter>", on_enter)
button2.bind("<Leave>", on_leave)
button2.pack()

root.mainloop()