英文:
check if Toplevel windows was closed?
问题
我正在尝试找出代码，用于检查"Extra"窗口是否已关闭。我一直在查找，似乎找不到任何有用的信息。有没有办法做到这一点？
英文:
I have a tkinter app, created with customtkinter:
import customtkinter
class App(customtkinter.CTk):
def __init__(self):
super().__init__()
Extra()
self.mainloop()
class Extra(customtkinter.CTkToplevel):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.geometry("400x300")
self.label = customtkinter.CTkLabel(self, text="ToplevelWindow")
self.label.pack(padx=20, pady=20)
App()
I am trying to figure out code that checks if the Extra window has been closed. I've been looking around and cannot seem to find anything useful. Is there a way of doing this?
答案1
得分: 3
根据此线程中的答案https://stackoverflow.com/questions/111155/how-do-i-handle-the-window-close-event-in-tkinter：
如果在您尚未定义处理程序的情况下收到WM_DELETE_WINDOW消息，则Tk将通过销毁接收到该消息的窗口来处理该消息。
我们可以添加名为WM_DELETE_WINDOW的protocol，并使用self.destroy()方法，如下所示：
class Extra(customtkinter.CTkToplevel):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.geometry("400x300")
self.label = customtkinter.CTkLabel(self, text="ToplevelWindow")
self.label.pack(padx=20, pady=20)
self.protocol("WM_DELETE_WINDOW", self.closed) # <-- 添加协议
def closed(self):
print("我已经关闭了！")
self.destroy()
结果是：
我已经关闭了！
然后我们终止额外的窗口。
英文:
Based on answers in this thread https://stackoverflow.com/questions/111155/how-do-i-handle-the-window-close-event-in-tkinter:
>If a WM_DELETE_WINDOW message arrives when you haven't defined a handler, then Tk handles the message by destroying the window for which it was received.
We could add a protocol named WM_DELETE_WINDOW and use the self.destroy() method as such:
class Extra(customtkinter.CTkToplevel):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.geometry("400x300")
self.label = customtkinter.CTkLabel(self, text="ToplevelWindow")
self.label.pack(padx=20, pady=20)
self.protocol("WM_DELETE_WINDOW", self.closed) # <-- adding the protocol
def closed(self):
print("I've been closed!")
self.destroy()
Resulting in:
I've been closed!
And we then terminate the extra window.
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