python - 如何关闭当前窗口并同时打开一个新窗口？

Question

此代码打开一个链接到另一个按钮的按钮。另一个按钮可以自行关闭，但第一个按钮无法自行关闭并同时打开一个新按钮，我该如何解决？

import tkinter as tk

class Demo1:
    def __init__(self, master):
        self.master = master
        self.frame = tk.Frame(self.master)
        self.HelloButton = tk.Button(self.frame, text = 'Hello', width = 25, command = self.new_window,)
        self.HelloButton.pack()
        self.frame.pack()
    def close_windows(self):
        self.master.destroy()
        self.new_window
    def new_window(self):
        self.new_window = tk.Toplevel(self.master)
        self.app = Demo2(self.new_window)


class Demo2:
    def __init__(self, master):
        self.master = master
        self.frame = tk.Frame(self.master)
        self.quitButton = tk.Button(self.frame, text = 'Quit', width = 25, command = self.close_windows)
        self.quitButton.pack()
        self.frame.pack()
    def close_windows(self):
        self.master.destroy()

def main(): 
    root = tk.Tk()
    app = Demo1(root)
    root.mainloop()

if __name__ == '__main__':
    main()

Answer 1

尝试重新定义您的 Demo1.new_window() 如下:

def new_window(self):
    self.master.destroy() # close the current window
    self.master = tk.Tk() # create another Tk instance
    self.app = Demo2(self.master) # create Demo2 window
    self.master.mainloop()