python之Tkinter之窗口焦点丢失事件

当 tkinter 窗口失去焦点时是否有一些事件触发可以使用 .bind 方法绑定(bind)到 tkinter 窗口？

请您参考如下方法:

您要查找的事件是<FocusOut> .

import tkinter as tk 
 
def on_focus_out(event): 
    if event.widget == root: 
        label.configure(text="I DON'T have focus") 
 
def on_focus_in(event): 
    if event.widget == root: 
        label.configure(text="I have focus") 
 
root = tk.Tk() 
label = tk.Label(width=30) 
label.pack(side="top", fill="both", expand=True) 
 
root.bind("<FocusIn>", on_focus_in) 
root.bind("<FocusOut>", on_focus_out) 
 
root.mainloop()