import time import tkinter as tk class Window:     def __init__(self, title='nms', width=300, height=120, staFunc=bool, stoFunc=bool):         self.w = width         self.h = height         self.stat = True         self.staFunc = staFunc         self.stoFunc = stoFunc         self.staIco = None         self.stoIco = None         self.root = tk.Tk(className=title)     def center(self):         ws = self.root.winfo_screenwidth()         hs = self.root.winfo_screenheight()         x = int( (ws/2) - (self.w/2) )         y = int( (hs/2) - (self.h/2) )         self.root.geometry('{}x{}+{}+{}'.format(self.w, self.h, x, y))     def packBtn(self):         self.btnSer = tk.Button(self.root, command=self.event, width=15, height=3)         self.btnSer.pack(padx=20, side='left')         btnQuit = tk.Button(self.root, text='关闭窗口', command=self.root.quit, width=15, height=3)         btnQuit.pack(padx=20, side='right')     def event(self):         self.btnSer['state'] = 'disabled'         if self.stat:             if self.stoFunc():                 self.btnSer['text'] = '启动服务'                 self.stat = False                 self.root.iconbitmap(self.stoIco)         else:             if self.staFunc():                 self.btnSer['text'] = '停止服务'                 self.stat = True                 self.root.iconbitmap(self.staIco)         self.btnSer['state'] = 'active'     def loop(self):         self.root.resizable(False, False)   #禁止修改窗口大小         self.packBtn()         self.center()                       #窗口居中         self.event()         self.root.mainloop() ######################################################################## def sta():     print('start.')     return True def sto():     print('stop.')     return True if __name__ == '__main__':     import sys, os     w = Window(staFunc=sta, stoFunc=sto)     w.staIco = os.path.join(sys.exec_prefix, 'DLLs\pyc.ico')     w.stoIco = os.path.join(sys.exec_prefix, 'DLLs\py.ico')     w.loop()