Tkinter:尝试单击时窗口闪烁 [英] Tkinter: Window flash when attempting to click away

问题描述

我已经尝试这样做了一段时间，但还没有想出办法.

Ive been trying to do this for a while now, but haven't figured out a way to do it.

我有一个 tkinter 脚本，它在按下按钮时创建一个弹出窗口.但是我不希望用户能够从这个窗口点击到任何以前创建的窗口.我已经使用 root.grab_set() 进行了这项工作，但是没有迹象表明用户必须留在该窗口上.

I have a tkinter script, that creates a popup window when a button is pressed. However I don't want the user to be able to click away from this window to any previous windows created. I have got this working with root.grab_set(), however there is no indication to the user that they must stay on that window.

class popup(object):
    def __init__(self, parent):
        self.root=Toplevel(parent)
        self.root.grab_set() #prevents the user clicking on the parent window
                             #But the window doesnt 'flash' when an attempt to click away is made

例如，当您有一个由文件对话模块创建的窗口时，如果您尝试点击另一个窗口，文件对话窗口会停留在顶部并有一个闪烁"动画，让用户知道他们不能点击离开.有没有办法重现这种效果?查阅文件对话的来源对我来说并没有什么成果，谷歌搜索也没有.

For example, when you have a window created by the filedialogue module, if you attempt to click onto another window the filedialogue window stays on top and has a 'flashing' animation to let the user know they cant click away. Is there a way I can reproduce this effect? Going through the source of filedialogue hasn't been fruitful for me, and neither have Google searches.

推荐答案

我能想到的最简单的方法是使用事件和焦点命令，以及 windows bell 命令:

The simplest way i can think to do this is to use an event and the focus commands, along with the windows bell command:

#!python3

import tkinter as tk

class popup(object):
    def __init__(self, parent):
        self.root=tk.Toplevel(parent)
        self.root.title("Popup")
        self.root.bind("<FocusOut>", self.Alarm)

    def Alarm(self, event):
        self.root.focus_force()
        self.root.bell()

main = tk.Tk()
main.title("Main")
pop = popup(main)
main.mainloop()

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