我正在测试一个有点大的Python 3.6项目的tkinter窗口管理，有一件事我似乎无法正确或甚至不能理解。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＆＃39; x＆＃39;按钮或按OS X中的Command-W）。但是，当我尝试为次要窗口关闭事件添加回调时，事情会变得混乱。例如，如果我有多个辅助窗口，则键盘快捷键甚至按钮并不总是关闭活动窗口。关于这里有什么问题的任何想法？
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()
似乎当我对行self.newDetailsWindow.wm_protocol("WM_DELETE_WINDOW", lambda: self.close_detail_window())取消注释时，窗口管理会被破坏。行self.newDetailsWindow.destroy()是不是足以简单地关闭辅助窗口？...我在实例化对象的方式上做错了吗？
答案 0 :(得分：2)
我对您的代码进行了多次调整。它现在应该工作。基本上，您的方法X每次调用时都会重新分配属性<TextBox Style="{StaticResource MaterialDesignFloatingHintTextBox}"
materialDesign:HintAssist.Hint="test"
materialDesign:HintAssist.IsFloating="True"
materialDesign:HintAssist.FloatingOffset="-15, 0"
Text="30.03.17"
Padding="15 0 0 0">
，这就是＆＃39; x＆＃39;按钮将被发送到错误的窗口。我使用app.create_detail_window来存储您创建的所有self.newDetailWindow
dict答案 1 :(得分：1)
看起来使用self.newDetailsWindow来创建新的顶层垃圾收集现有的toplevel。我在App中添加了一个列表类变量，它是Toplevels的列表。
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()
self.windows = [] #This is a list of the created windows instances.
def create_detail_window(self, *event, number=None):
newDetailsWindow = tk.Toplevel(self.master)
self.windows.append(newDetailsWindow)
newDetailsWindow.geometry('900x600+80+130')
newDetailsWindow.title(f'Detail: {number}')
newDetailsWindow.wm_protocol("WM_DELETE_WINDOW", lambda:
self.close_detail_window(newDetailsWindow)) # This line breaks window management!...
detail_window = detailWindow(newDetailsWindow, 0)
newDetailsWindow.focus()
def close_detail_window(self, window):
""" will test for some condition before closing, save if necessary and
then call destroy()
"""
self.windows.remove(window)
window.destroy() # destroy the specific instance in self.windows
答案 2 :(得分：0)
如评论中所述，在您的情况下，以下代码仍然有效。
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))
self.btn.pack()
self.windows_count=0
def create_detail_window(self, *event):
self.windows_count+=1
newDetailsWindow=tk.Toplevel()
newDetailsWindow.geometry('900x600+80+130')
newDetailsWindow.title(f'Detail: {self.windows_count}')
newDetailsWindow.wm_protocol("WM_DELETE_WINDOW", newDetailsWindow.destroy)
self.detail_window = detailWindow(newDetailsWindow, self.windows_count)
newDetailsWindow.focus()
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()