激活 Tkinter Toplevel [英] Make a Tkinter Toplevel active

问题描述

我正在尝试制作一个 Toplevel 小部件，它是屏幕上的活动窗口(我想要它，以便如果您按 Enter，它会退出窗口.我已经有键绑定到小部件，但我似乎无法让窗口成为​​我计算机上的主窗口.我正在使用 Notepad++ 运行我的程序(我有这个特定程序的快捷方式，因为我将使用它很多).

I am trying to make a Toplevel widget that is the active window on the screen (I want it so that if you press Enter, it exits the window. I already have the key bound to the widget, but I can't seem to get the window to be the main window on my computer. I am running my program using Notepad++ (I have a shortcut for this specific program since I will be using it a lot).

这是我的代码:

def main():
    root = Tk(className = ' Module Opener')
    app = GetFileName(root)
    root.rowconfigure(0, weight = 1)
    root.columnconfigure(0, weight = 1)
    root.bind('<Return>', (lambda e, b=app.goButton: b.invoke()))
    root.mainloop()
    f, pythonType = app.fileName, app.pythonType
    if f[-3:] != '.py': f += '.py'
    moduleFile = getFilePath(f, pythonType)
    if not moduleFile is None:
        subprocess.call([r"C:\Program Files\Notepad++\notepad++.exe", moduleFile])
    else:
        root.withdraw()
        finalRoot = Toplevel(root)
        finalRoot.grab_set() # I thought this would make it active
        finalApp = FileNotExist(finalRoot, f)
        finalRoot.rowconfigure(0, weight = 1)
        finalRoot.columnconfigure(0, weight = 1)
        finalRoot.bind('<Return>', (lambda e, b=finalApp.okButton: b.invoke()))
        finalRoot.mainloop()

我想要它，当它打开时，如果我按 Enter，它会执行我的命令；但是，我必须先在窗口中单击以使其处于活动状态，然后才能工作.

I want it so that when it opens, if I press Enter, it does my command; however, I have to click in the window first so that it becomes active, and then it works.

我尝试了各种方法，例如 finalRoot.lift()、finalRoot.focus_set()、finalRoot.grab_set()/finalRoot.grab_set_global()(我从 另一个问题) 和 finalRoot.focus().

I tried various things such as finalRoot.lift(), finalRoot.focus_set(), finalRoot.grab_set()/finalRoot.grab_set_global() (I saw these methods from another question), and finalRoot.focus().

第一个窗口 Tk() 在程序启动时处于活动状态.但是，Toplevel() 不是.我还尝试制作两个 Tk()(销毁 root 然后创建 finalRoot 作为新的 Tk()> 实例)，但这并不奏效.我怎样才能做到这一点?谢谢！

The first window Tk() is active when the program starts. However, the Toplevel() is not. I also tried making two Tk()'s (destroying root and then creating finalRoot as a new Tk() instance), but this did not work as well. How can I do this? Thanks!

推荐答案

...但是，我必须先在窗口中单击以使其处于活动状态，然后才能工作.

...however, I have to click in the window first so that it becomes active, and then it works.

我刚遇到这个问题，在研究解决方案时，我发现了这个线程.我正在使用 Windows 7 专业版.我所做的只是调用 both grab_set() 和 focus() ，它为我解决了这个问题.你已经有了finalRoot.grab_set()，只需添加:

I just encountered this problem and while I was researching a solution, I found this thread. I'm using Windows 7 Professional. All I did was call both grab_set() and focus() and it solved the problem for me. You already have finalRoot.grab_set(), just add:

finalRoot.focus()

它在我的情况下有效.

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