Question

我正在使用python在系统中进行临时签名。目前，如果您输入正确的密码，它会显示一个新的管理窗口。如果输入错误，则会显示一个错误密码的新窗口。如果您退出其中一个窗口，然后尝试再次输入密码，它会中断。 tkinter.TclError: can't invoke "wm" command: application has been destroyed有没有办法防止这种情况，所以如果有人输入了错误的密码，他们就不需要重启应用了？

import tkinter
from tkinter import *

#define root window
root = tkinter.Tk()
root.minsize(width=800, height = 600)
root.maxsize(width=800, height = 600)

#define admin window
admin = tkinter.Tk()
admin.minsize(width=800, height = 600)
admin.maxsize(width=800, height = 600)
admin.withdraw()

#define wrong window
wrong = tkinter.Tk()
wrong.minsize(width=200, height = 100)
wrong.maxsize(width=200, height = 100)
wrong.withdraw()
Label(wrong, text="Sorry that password is incorrect!", font=("Arial", 24), anchor=W, wraplength=180, fg="red").pack()

#Admin sign in Label
areAdmin = Label(root, text="Administrator sign in", font=("Arial", 18))
areAdmin.pack()

#password label and password
passwordLabel = Label(root, text="Password: ", font=("Arial", 12))
passwordLabel.place(x=300, y=30)

#password entry
adminPasswordEntry = Entry(root)
adminPasswordEntry.place(x=385, y=32.5)

#function for button
def getEnteredPassword():
    enteredPassword = adminPasswordEntry.get()
    if enteredPassword == password:
        admin.deiconify()
    else:
        wrong.deiconify()

#enter button for password
passwordEnterButton = Button(root, text="Enter", width=20, command=getEnteredPassword)
passwordEnterButton.place(x=335, y=60)


mainloop()

Answer 1

我不太了解tkinter，但我可以修复您的代码，我希望这是一个正确的解决方法。

创建Toplevel窗口而不是Tk。那些是对话窗口，而不是Tk窗口，它必须是唯一的。相同的外观＆amp;感觉，方法相同
每次需要时创建窗口。否则，使用关闭小工具关闭它们会破坏它们。

修复了代码，输入错误或良好的密码，无需崩溃即可：

import tkinter
from tkinter import *

password="good"

#define root window
root = tkinter.Tk()
root.minsize(width=800, height = 600)
root.maxsize(width=800, height = 600)



#Admin sign in Label
areAdmin = Label(root, text="Administrator sign in", font=("Arial", 18))
areAdmin.pack()

#password label and password
passwordLabel = Label(root, text="Password: ", font=("Arial", 12))
passwordLabel.place(x=300, y=30)

#password entry
adminPasswordEntry = Entry(root)
adminPasswordEntry.place(x=385, y=32.5)

#function for button
def getEnteredPassword():
    enteredPassword = adminPasswordEntry.get()
    if enteredPassword == password:
        admin = tkinter.Toplevel()
        admin.minsize(width=800, height = 600)
        admin.maxsize(width=800, height = 600)
        #admin.withdraw()
    else:
        wrong = tkinter.Toplevel()
        wrong.minsize(width=200, height = 100)
        wrong.maxsize(width=200, height = 100)
        Label(wrong, text="Sorry that password is incorrect!", font=("Arial", 24), anchor=W, wraplength=180, fg="red").pack()


#enter button for password
passwordEnterButton = Button(root, text="Enter", width=20, command=getEnteredPassword)
passwordEnterButton.place(x=335, y=60)


mainloop()

如何允许多次打开tkinter窗口

1 个答案: