我正在尝试在tkinter中编写一个程序，用户点击一个带有其名称的按钮，然后验证页面会向他们显示该程序 . 我遇到的问题是变量要么重置，要么我访问错误：
import tkinter as tk
from tkinter import *
from tkinter import ttk
LARGE_FONT = ("Times New Roman", 12)
NORM_FONT = ("Times New Roman", 10)
root = Tk()
root.withdraw()
class DIS(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
tk.Tk.iconbitmap(self, default="")
tk.Tk.wm_title(self, "program")
container = tk.Frame(self)
container.pack(side="top", fill="both", expand = True)
container.grid_rowconfigure(0, weight = 1)
container.grid_columnconfigure(0, weight = 1)
self.frames = {}
for F in (StartPage, contactQues, nameVerify):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row = 0, column = 0, sticky = "nsew")
self.show_frame(StartPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class StartPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
button2 = ttk.Button(self, text = "Name Select",
command=lambda: controller.show_frame(contactQues))
button2.pack()
class contactQues(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
global name
name = StringVar()
label1 = tk.Label(self, text = "Select Your Name", font = LARGE_FONT)
label1.pack(pady=10, padx=10)
button2 = ttk.Button(self, text = "Bojangles", command = self.bojangles)
button2.pack(pady=5)
def bojangles(self):
name.set("Mr. Bojangles")
self.controller.show_frame(nameVerify)
#
#Many other names to select
#
class nameVerify(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
namename = name.get()
label5 = tk.Label(self, text = "Your Name:", font = LARGE_FONT)
label5.pack(pady=10, padx=10)
labelcontact = tk.Label(self, text = namename, font = NORM_FONT)
labelcontact.pack()
app = DIS()
app.mainloop()
所以，从本质上讲，我想要发生的是： - 程序运行，用户按“名称选择”，用户选择他们的名字，最后一页显示他们的选择 .
我已经尝试过使用全局变量， labelcontact 标签的textvariables，StringVar（）等，并且似乎无法将这一点挂起来 .
有一个更好的方法吗？或者我在做一些内在错误的事情？
感谢您的任何帮助 .
1 回答
我建议将
name作为DIS类的属性 . 然后，您的StartPage和nameVerify实例可以通过其controller属性访问它 . 如果希望labelcontact在name时自动更新，请使用textvariable属性 .此外，您需要删除
root = Tk()和root.withdraw()行 . 我没有't know why, but as long as they'那里，labelcontact标签赢了't properly update. They don' t似乎在任何情况下做任何事情 - 希望它们对你的实际代码并不重要 .