Tkinter - 窗口焦点丢失事件 [英] Tkinter - window focus loss event

问题描述

当 tkinter 窗口失去焦点时，是否有一些事件触发，可以使用 .bind 方法绑定到 tkinter 窗口?>

Is there some event triggering when tkinter window loses focus that can be bound to a tkinter window using the .bind method?

推荐答案

您要查找的事件是 .

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()

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