#!/usr/bin/env python3 # -*- coding: utf-8 -*- import time import tkinter import tkinter.messagebox from threading import Thread def main(): class DownloadTaskHandler(Thread): def run(self): time.sleep(5) tkinter.messagebox.showinfo('提示', '下载完成!') # 启用下载按钮 button1.config(state=tkinter.NORMAL) def download(): # 禁用下载按钮 button1.config(state=tkinter.DISABLED) # 通过daemon参数将线程设置为守护线程(主程序退出就不再保留执行) # 在线程中处理耗时间的下载任务 DownloadTaskHandler(daemon=True).start() def show_about(): tkinter.messagebox.showinfo('关于', '作者: 123(v1.0)') top = tkinter.Tk() top.title('多线程') top.geometry('400x400') top.wm_attributes('-topmost', 1) panel = tkinter.Frame(top) button1 = tkinter.Button(panel, text='下载', command=download) button1.pack(side='left') button2 = tkinter.Button(panel, text='关于', command=show_about) button2.pack(side='right') panel.pack(side='bottom') tkinter.mainloop() if __name__ == '__main__': main()