tkinter:在几个画布中将鼠标滚轮绑定到几个帧中的滚动条

import tkinter as tk

root = tk.Tk()
scrollbar = tk.Scrollbar(root)
scrollbar.pack(side=tk.RIGHT, fill=tk.Y)

canvas = tk.Canvas(root, yscrollcommand=scrollbar.set)
canvas.pack(side=tk.LEFT, fill=tk.BOTH)
scrollbar.config(command=canvas.yview)

frame = tk.Frame(canvas)
canvas.create_window((0, 0), window=frame, anchor=tk.NW)

def on_mousewheel(event):
    canvas.yview_scroll(int(-1*(event.delta/120)), "units")

canvas.bind_all("<MouseWheel>", on_mousewheel)