Tkinter 不会打开两个以上的窗口 [英] Tkinter won't open more than two windows

问题描述

我正在使用 Tkinter 在 python 中开发一个程序.我目前遇到的问题是我有打开另一个窗口的按钮.我的问题是它不能打开两个以上的窗口.关于如何解决此问题的任何想法.

I'm working on a program in python using Tkinter. The issue I currently have is that I have buttons that open another windows. My issue is that it can't open more than two windows. Any ideas on how to fix this.

from tkinter import *

class first(object):
    def __init__(self, master):
        self.master = master
        self.admin_btn = Button(master, text = "First", command = self.second)
        self.admin_btn.grid(row = 0, column = 0)

    def second(self):
        self.w = second(self.master)
        self.master.wait_window(self.w.top)

class second(object):
    def __init__(self, master):
        top = self.top = Toplevel(master)
        self.second = Button(top, text = "Second", command = self.third)
        self.second.grid(row= 0, column = 0)

    def third(self):
        self.w = third(self.master)
        self.master.wait_window(self.w.top)

class third(object):
    def __init__(self, master):
        top = self.top = Toplevel(master)
        self.second = Button(top, text = "Third")
        self.second.grid(row= 0, column = 0)


if __name__ == "__main__":
    root = Tk()
    m = first(root)
    root.mainloop()

推荐答案

我建议你所有的类都继承自 Toplevel 而不是 object，这样，你的所有类都会有一个 master 属性(它这就是为什么你有一个错误，second 类没有一个):

I suggest that all your classes inherit from Toplevel instead of object, this way, all your classes will have a master attribute (which is why you had an error, the second class does not have one):

from tkinter import *

class First(Toplevel):
    def __init__(self, master):
        Toplevel.__init__(self, master)
        self.admin_btn = Button(self, text = "First", command = self.second)
        self.admin_btn.grid(row=0, column=0)

    def second(self):
        self.w = Second(self)
        self.wait_window(self.w)

class Second(Toplevel):
    def __init__(self, master):
        Toplevel.__init__(self, master)
        self.second = Button(self, text = "Second", command = self.third)
        self.second.grid(row=0, column=0)

    def third(self):
        self.w = Third(self.master)
        self.wait_window(self.w)

class Third(Toplevel):
    def __init__(self, master):
        Toplevel.__init__(self, master)
        self.second = Button(self, text = "Third")
        self.second.grid(row=0, column=0)


if __name__ == "__main__":
    root = Tk()
    m = First(root)
    m.lift(root)
    root.wait_window(m)
    root.mainloop()

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