在Tkinter中正确使用MVC模式的多窗口

import tkinter as tk

class MainWindow(tk.Tk):
    def __init__(self):
        super().__init__()
        self.title("Main Window")
        self.geometry("400x300")

        self.button = tk.Button(self, text="Open Sub Window", command=self.open_sub_window)
        self.button.pack()

    def open_sub_window(self):
        SubWindow(self)

    def start(self):
        self.mainloop()

if __name__ == "__main__":
    main_window = MainWindow()
    main_window.start()

class SubWindow(tk.Toplevel):
    def __init__(self, master):
        super().__init__(master)
        self.title("Sub Window")
        self.geometry("200x150")

        self.label = tk.Label(self, text="Hello from Sub Window!")
        self.label.pack()

class Controller:
    def __init__(self, main_window):
        self.main_window = main_window

        # 添加控制器相关的逻辑

if __name__ == "__main__":
    main_window = MainWindow()
    controller = Controller(main_window)
    main_window.start()

class MainWindow(tk.Tk):
    def __init__(self, controller):
        super().__init__()
        self.controller = controller

        # 省略其他代码

    def open_sub_window(self):
        self.controller.open_sub_window()