tkinter：将函数绑定到打开simpledialog的按钮

Question

我试图用tk inter编写一个程序，在“电话簿”中存储用户的联系人（姓名和电话号码），但也允许用户添加新的联系人。我想将“addcontact”按钮绑定到一个函数上，该函数打开一个简单的对话框，要求用户输入他们想要添加的新名称和电话号码。然后我会把这些信息显示在“电话簿”中。然而，每次我运行我的代码，我得到了死亡的纺车和没有负载。这是我的密码

from tkinter import *
from tkinter import ttk
import tkinter as tk
from tkinter import simpledialog
from tkinter import messagebox
import tkinter as tk
from tkinter import simpledialog

def contact(event = None):
    phonenum = listbox.get(listbox.curselection())
    numString.set("Phone Number" + ":" + " " + phonenumbers[phonenum])

def add(event = None):
    application_window = tk.Tk()
    answer = simpledialog.askstring("String", "Enter name, phone number", parent=application_window)

root = Tk()
root.title("Contacts")
phonenumbers = {"John" : "201-453-4324", "Stacy" : "201-453-3564", "Tim" : "832-143-5345", "Maria" : "503-675-3322"}
contacts = phonenumbers.keys()
listbox = Listbox(root)
listbox.grid(row = 0, column = 0)

for c in contacts:
    listbox.insert(END, c)

#Output phone number
numString = StringVar()
numLabel = Label(root, textvariable = numString)
numLabel.grid(row = 4, column = 0, columnspan = 1)

 #Buttons
contactButton = Button(root, text = "Contact Info")
contactButton.grid(row = 2, column = 0)
contactButton.bind("<Button-1>", contact)
addButton = contactButton = Button(root, text = "Add Contact")
addButton.bind("<Button-1>", add)
addButton.grid(row = 3, column = 0)
root.mainloop()

Answer 1

您不需要额外的Tk()调用，也不需要设置父窗口。另外，您应该对按钮使用命令参数，而不是绑定：

def add(event = None):
    answer = simpledialog.askstring("String", "Enter name, phone number")

addButton = tk.Button(root, text = "Add Contact", command=add)