在python中退出mainloop

Z时代
2024-01-10
分类：问答

尽管我是一种使用其他语言进行实验的程序员，但是我在Python中还是一个新手。我一直在尝试做一个非常简单的事情，那就是在启动后退出mainloop。看来这很重要。下面的程序仅产生一系列事件。一切似乎都正常，但是我无法关闭最后一个窗口。该怎么办？

from Tkinter import *
root=Tk()
theMainFrame=Frame(root)
theMainFrame.pack()
class CloseAfterFinishFrame1(Frame): # Diz que herda os parametros de Frame
    def __init__(self):
        Frame.__init__(self,theMainFrame) # Inicializa com os parametros acima!!
        Label(self,text="Hi",font=("Arial", 16)).pack()
        button = Button (self, text = "I am ready", command=self.CloseWindow,font=("Arial", 12))
        button.pack()            
        self.pack()
    def CloseWindow(self):
        self.forget()
        CloseAfterFinishFrame2()
class CloseAfterFinishFrame2(Frame): # Diz que herda os parametros de Frame
    def __init__(self):
        Frame.__init__(self,theMainFrame) # Inicializa com os parametros acima!!
        Label(self,text="Hey",font=("Arial", 16)).pack()
        button = Button (self, text = "the End", command=self.CloseWindow,font=("Arial", 12))
        button.pack()
        self.pack()        
    def CloseWindow(self):
        self.forget()
        CloseEnd()
class CloseEnd():
    theMainFrame.quit()
CloseAfterFinishFrame1()
theMainFrame.mainloop()

回答：

致电root.quit()，而不是theMainFrame.quit：

import Tkinter as tk
class CloseAfterFinishFrame1(tk.Frame):  # Diz que herda os parametros de Frame
    def __init__(self, master):
        self.master = master
        tk.Frame.__init__(self, master)  # Inicializa com os parametros acima!!
        tk.Label(self, text="Hi", font=("Arial", 16)).pack()
        self.button = tk.Button(self, text="I am ready",
                           command=self.CloseWindow, font=("Arial", 12))
        self.button.pack()
        self.pack()
    def CloseWindow(self):
        # disable the button so pressing <SPACE> does not call CloseWindow again
        self.button.config(state=tk.DISABLED)
        self.forget()
        CloseAfterFinishFrame2(self.master)
class CloseAfterFinishFrame2(tk.Frame):  # Diz que herda os parametros de Frame
    def __init__(self, master):
        tk.Frame.__init__(self, master)  # Inicializa com os parametros acima!!
        tk.Label(self, text="Hey", font=("Arial", 16)).pack()
        button = tk.Button(self, text="the End",
                           command=self.CloseWindow, font=("Arial", 12))
        button.pack()
        self.pack()
    def CloseWindow(self):
        root.quit()
root = tk.Tk()
CloseAfterFinishFrame1(root)
root.mainloop()