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我正在测试tkinter窗口管理的一个有点大的Python 3.6项目，有一件事情我似乎无法正确理解，甚至无法理解。在下面的代码中，窗口按预期打开和关闭（我的意思是，通过单击红色的'x'按钮或通过在OS X中按Command-W）。但是，当我尝试为次级窗口关闭事件广告回调时，事情变得混乱。例如，如果我有多个辅助窗口，则键盘快捷方式或按钮并不总是关闭活动窗口。任何关于这里有什么错误的想法？为什么“wm_protocol”会破坏Python3/tkinter中的正常窗口管理？
这是我目前的测试代码：
#!/usr/bin/env python3.6
# encoding: utf-8
import tkinter as tk
import tkinter.font
from tkinter import ttk
class baseApp(ttk.Frame):
"""
Parent classe for main app window (will include some aditional methods and properties).
"""
def __init__(self, master, *args, **kwargs):
super().__init__(master, *args, **kwargs)
self.master = master
self.mainframe = ttk.Frame(master)
self.mainframe.pack()
class App(baseApp):
""" Base class for the main application window """
def __init__(self, master, *args, **kwargs):
super().__init__(master, *args, **kwargs)
self.master = master
self.lbl_text = ttk.Label(self.mainframe, text="This is the Main Window")
self.lbl_text.pack()
self.btn = ttk.Button(self.mainframe, text="Open Second window",
command=lambda: self.create_detail_window(self, number=0))
self.btn.pack()
def create_detail_window(self, *event, number=None):
self.newDetailsWindow = tk.Toplevel(self.master)
self.newDetailsWindow.geometry('900x600+80+130')
self.newDetailsWindow.title(f'Detail: {number}')
self.newDetailsWindow.wm_protocol("WM_DELETE_WINDOW", lambda: self.close_detail_window()) # This line breaks window management!...
self.detail_window = detailWindow(self.newDetailsWindow, 0)
self.newDetailsWindow.focus()
def close_detail_window(self, *event):
""" will test for some condition before closing, save if necessary and
then call destroy()
"""
self.newDetailsWindow.destroy() # Shouldn't this be enough to close the secondary window?...
class detailWindow(ttk.Frame):
""" Base class for secondary windows """
def __init__(self, master, rep_num, *args,**kwargs):
super().__init__(master,*args,**kwargs)
self.num_rep = rep_num
self.master.minsize(900, 600)
self.master.maxsize(900, 600)
print(f"Showing details about nr. {self.num_rep}")
self.mainframe = ttk.Frame(master)
self.mainframe.pack()
self.lbl_text = ttk.Label(self.mainframe,
text=f"Showing details about nr. {self.num_rep}")
self.lbl_text.pack()
if __name__ == "__main__":
root = tk.Tk()
janela_principal = App(root)
root.title('Main Window')
root.bind_all("<Mod2-q>", exit)
root.mainloop()
看来，当我去注释行self.newDetailsWindow.wm_protocol("WM_DELETE_WINDOW", lambda: self.close_detail_window())窗口管理得到打破。不应该行self.newDetailsWindow.destroy()足以简单地关闭辅助窗口？...我是否在实例化对象时做了任何错误？
您能详细说明是什么问题？我无法在Windows电脑上重现您的错误。 – Dashadower
在我目前使用的Mac上，如果我运行此代码并且多次单击该按钮以打开两个或多个辅助窗口，并且如果在后台窗口中单击其中一个窗口（我的意思是例如第一个辅助窗口），键盘快捷方式不能按预期方式工作。我得到另一个窗口（最后一个窗口）关闭。然后，第一个辅助窗口不会关闭，除非我退出整个应用程序。 –