tkinter 的两个例子

第一个例子：after

用于定时操作

import tkinter as tk import time class MyApp(tk.Frame): def __init__(self, msecs=1000): super().__init__() self.pack() self.msecs = msecs self.utc_time = tk.Label(self, text='', bg='navy', fg='white') self.utc_time.pack() self.cst_time = tk.Label(self, text='', bg='navy', fg='white') self.cst_time.pack() self.repeater() def repeater(self): self.utc_time.config(text= 'UTC: ' + time.strftime('%Y/%m/%d %H:%M:%S',time.gmtime())) self.cst_time.config(text= 'CST: ' + time.strftime('%Y/%m/%d %H:%M:%S',time.localtime())) self.after(self.msecs, self.repeater) if __name__ == '__main__': MyApp(msecs=1000).mainloop()

效果图：

第二个例子：pack_forget

用于切换窗口部件的显示、隐藏

import tkinter as tk class MyApp(tk.Frame): def __init__(self): super().__init__() self.pack() # 两个按钮 self.rowframe = tk.Frame(self) self.rowframe.pack(fill='x') self.btn2 = tk.Button(self.rowframe, text='按钮2') # , command=self.update self.btn2.pack(side=tk.RIGHT) self.btn1 = tk.Button(self.rowframe, text='按钮1') self.btn1.pack(side=tk.RIGHT) self.btn1.bind('<Button-1>', self.update) self.btn2.bind('<Button-1>', self.update) # 测试pack_forget def update(self, event): #print(dir(event)) if event.widget == self.btn1: self.btn1.forget() self.btn2.pack(side=tk.RIGHT) else: self.btn2.pack_forget() # 故意的 self.btn1.pack(side=tk.RIGHT) if __name__ == '__main__': MyApp().mainloop()

效果图：

转载于:https://www.cnblogs.com/hhh5460/p/5858631.html