Tkinter窗口专注于Mac OS X [英] Tkinter window focus on Mac OS X

问题描述

我正在用Tkinter GUI框架用Python编写一个应用程序.它监听键盘和鼠标事件，因此它必须具有焦点.从Ubuntu中的终端启动时，以下代码有效:

I'm writing an application in Python with the Tkinter GUI framework. It listens for keyboard and mouse events, so it must have focus. When it is launched from a terminal in Ubuntu, the following code works:

from Tkinter import *

root = Tk()
root.focus_force()

def key(event):
    print "pressed", event.char

def callback(event):
    print "clicked at", event.x, event.y 

frame = Frame(root, width=100, height=100)
frame.bind("<Key>", key)
frame.bind("<Button-1>", callback)
frame.pack()
frame.focus_force()

root.mainloop()

但是，当从Mac OS X 10.8.4(股票Python 2.7.2)中的终端启动时，终端仿真器会保留焦点，直到用户单击窗口为止.有谁知道解决方法?

However, when launched from a terminal in Mac OS X 10.8.4 (stock Python 2.7.2), focus is retained by the terminal emulator until the user clicks on the window. Does anyone know of a workaround for this?

推荐答案

我尝试过此方法，对我来说效果很好:

I tried this and it worked well for me:

from os import system
from platform import system as platform

# set up your Tk Frame and whatnot here...

if platform() == 'Darwin':  # How Mac OS X is identified by Python
    system('''/usr/bin/osascript -e 'tell app "Finder" to set frontmost of process "Python" to true' ''')

当然，这会将整个应用程序放到最前面，不仅是特定的窗口，而且在执行此操作之后，您可以在特定的框架或窗口上使用focus_force()，然后将其移动到您所有应用程序窗口的最前面.

Of course, that'll bring your entire application to the front, not just a specific window, but after you do that, you can then use focus_force() on a specific frame or window and that'll get moved to become the frontmost of all your application windows.

对于那些感兴趣的人，我自己没有写system()电话.我在在SourceForge上的该线程中找到了它.

For those interested, I didn't write the system() call myself. I found it in this thread on SourceForge.

我将system()调用放在一个if块中以验证它是否已在OS X上运行，这一事实使该解决方案跨平台-我的理解是focus_force()完全可以在您希望的所有其他平台上工作，并且在system()调用之后执行该操作也不会在OS X中引起任何问题.

The fact that I put the system() call within an if block that verifies this is running on OS X makes the solution cross platform - my understanding is that focus_force() works on all other platforms exactly as you want, and just performing it after the system() invocation wouldn't cause any problems in OS X, either.

这篇关于Tkinter窗口专注于Mac OS X的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！