Python 使 Tkinter 小部件成为焦点
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Make Tkinter widget take focus
提问by Ali
I have a script that uses Tkinter to pop up a window with a message. How do I make sure it takes focus so the user doesn't miss it and explicitly has to dismiss the window. the code is :
我有一个脚本，它使用 Tkinter 弹出一个带有消息的窗口。我如何确保它获得焦点，以便用户不会错过它并明确地关闭窗口。代码是：
root = Tk()
to_read = "Stuff"
w = Label(root, text=to_read)
w.pack()
root.mainloop()
采纳答案by ars
You can use focus_forcemethod. See the following:
您可以使用focus_force方法。请参阅以下内容：
But note the the documentation:
但请注意文档：
w.focus_force()
Force the input focus to the widget. This is impolite. It's better to wait for the window manager to give you the focus. See also .grab_set_global() below.
w.focus_force()
强制输入焦点到小部件。这是不礼貌的。最好等待窗口管理器给你焦点。另请参阅下面的 .grab_set_global()。
Update: It should work on root. For example, try running the following code. It will create a window and you can switch focus. After 5 seconds, it will try to grab the focus.
更新：它应该适用于root. 例如，尝试运行以下代码。它将创建一个窗口，您可以切换焦点。5 秒后，它会尝试抓住焦点。
from Tkinter import *
root = Tk()
root.after(5000, lambda: root.focus_force())
root.mainloop()
