(Python)使用滚动条将帧插入画布

import tkinter as tk

# 创建主窗口
root = tk.Tk()
root.title("滚动条示例")

# 创建画布
canvas = tk.Canvas(root, width=400, height=300)
canvas.pack()

# 创建滚动条
scrollbar = tk.Scrollbar(root, orient="vertical", command=canvas.yview)
scrollbar.pack(side="right", fill="y")

# 关联滚动条和画布
canvas.configure(yscrollcommand=scrollbar.set)

# 创建帧
frame = tk.Frame(canvas)

# 将帧插入画布
canvas.create_window((0, 0), window=frame, anchor="nw")

# 添加内容到帧中
for i in range(50):
    label = tk.Label(frame, text="这是第{}行".format(i+1))
    label.pack()

# 更新画布的滚动区域
frame.update_idletasks()
canvas.configure(scrollregion=canvas.bbox("all"))

# 运行主窗口的消息循环
root.mainloop()