Question

在输入正确的密码（asdf）后，以下代码中为什么我的小部件password_entry不会被销毁，我无法弄清楚。关于如何解决该问题的任何想法？

如果单击第一个IMS，则可以输入用户名（Marvin），如果正确，则可以输入密码（asdf）。如果密码正确，您将获得一个红色的IMS，并且没有任何输入。

我不明白为什么username_entry会被销毁，而password_entry不会。感谢四个您的帮助！

from Tkinter import *
import time

title_active = False

root = Tk()
width_root = 1000
height_root = 600
root.geometry("1000x600+200+150")
rootcanvas = Canvas(root, width=1000, height=600)
rootcanvas.pack()

def create_title(color):
    global title_active, title_rect_length, title_rect_height, title_rect, title_text
    title_rect_length = 400
    title_rect_height = 100
    title_rect = rootcanvas.create_rectangle(width_root/2-title_rect_length/2, height_root/2-title_rect_height, width_root/2+title_rect_length/2, height_root/2+title_rect_height, width=5, outline=color)

    title_text = rootcanvas.create_text(width_root/2, height_root/2, text="IMS", font="Helvetica 200", fill=color)
    title_active = True

def check_password(event):
    global password_entry, password_text
    if password_entry.get() == "asdf":
        rootcanvas.delete(password_entry)
        rootcanvas.delete(password_text)
        create_title("red")
    else:
        print("password wrong")

def check_username(event):
    global password_text, password_entry, username_entry, username_text
    if username_entry.get() == "Marvin":
        rootcanvas.delete(username_entry)
        rootcanvas.delete(username_text)
        password_text = rootcanvas.create_text(width_root/2, height_root/2, text="Password", font="Helvetica 50", fill="blue")
        password_entry = Entry(rootcanvas)

        entry_x = width_root/2-110
        entry_y = height_root/2+20
        password_entry.place(x=entry_x, y= entry_y, width=220, height=40)
        password_entry.bind("<Return>", check_password)

    else:
        print("This user is unauthorized to enter IMS.")

def login_menu():
    global username_entry, username_text
    username_text = rootcanvas.create_text(width_root/2, height_root/2, text="Username", font="Helvetica 50", fill="blue")
    username_entry = Entry(rootcanvas)
    entry_x = width_root/2-110
    entry_y = height_root/2+20
    username_entry.place(x=entry_x, y= entry_y, width=220, height=40)
    username_entry.bind("<Return>", check_username)

def title_clicked():
    global title_active
    title_active = False
    rootcanvas.delete(title_rect)
    rootcanvas.delete(title_text)
    login_menu()

def click(event):
    global x,y, title_active
    x = event.x
    y = event.y
    if title_active == True:
        if width_root/2-title_rect_length/2 <= x <= width_root/2+title_rect_length/2 and height_root/2-title_rect_height <= y <= height_root/2+title_rect_height: 
            title_clicked()

rootcanvas.bind("<Button 1>", click)
create_title("blue")
root.mainloop()

Answer 1

将“ rootcanvas.delete(password_entry)”更改为“ password_entry.destroy()”，并将username_entry的名称更改为相同的名称（将“ rootcanvas.delete(username_entry)”更改为“ username_entry.destroy()”

这应该可以解决您的问题。

如何解决该问题，以便在使用正确的密码后销毁小部件password_entry？

1 个答案: