Question

这是我第一次尝试使用GUI和python，所以任何指导都会受到赞赏。我写了一个包含在client.py中的tkinter GUI，我希望先显示它。成功登录后，将出现第二个gui，它包含在menu.py中。我无法理解为什么在登录后menu.py的gui无法正常显示。我尝试从Menu.py获取所有内容并将它们放在Client.py中，但这似乎无法解决问题。

会发生什么： 1.）登录GUI出现 2.）我登录w /正确的凭据 3.）我得到200 OK消息 4.）出现空GUI，我收到此错误：

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\Pat\AppData\Local\Programs\Python\Python35-32\lib\tkinter\__init__.py", line 1549, in __call__
    return self.func(*args)
  File "C:\Users\Pat\Documents\GitHub\DunderMifflinSales\DunderMifflinClient.py", line 51, in _login_btn_clicked
    mf = Menu.MenuFrame(menu)
  File "C:\Users\Pat\Documents\GitHub\DunderMifflinSales\Menu.py", line 9, in __init__
    mainframe = ttk.Frame(root, padding="3 3 12 12")
NameError: name 'root' is not defined

打算如下： 1.）登录GUI出现 2.）使用正确的凭据登录 3.）菜单gui出现

我很难理解为什么我的逻辑不起作用。感谢您的任何帮助。

Client.py

import socket
from tkinter import *
import tkinter.messagebox as tm
from tkinter import ttk
import Menu

serverName = 'localhost'
serverPort = 12000
clientSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)


class LoginFrame(Frame):

    def __init__(self, master):
        super().__init__(master)

        self.label_1 = Label(self, text="Username")
        self.label_2 = Label(self, text="Password")

        self.entry_1 = Entry(self)
        self.entry_2 = Entry(self, show="*")

        self.label_1.grid(row=0, sticky=E)
        self.label_2.grid(row=1, sticky=E)
        self.entry_1.grid(row=0, column=1)
        self.entry_2.grid(row=1, column=1)

        self.logbtn = Button(self, text="Login", command = self._login_btn_clicked)
        self.logbtn.grid(columnspan=2)

        self.pack()


    def _login_btn_clicked(self):

        username = self.entry_1.get()
        clientSocket.sendto(username.encode('UTF-8'),(serverName, serverPort))

        password = self.entry_2.get()
        clientSocket.sendto(password.encode('UTF-8'),(serverName, serverPort))

        message, address = clientSocket.recvfrom(1024)
        message = message.decode('UTF-8')

        if message == "200 OK":
            tm.showinfo("Logged in", message)
            menu = Tk()
            menu.title("Dunder Mifflin GUI")
            mf = Menu.MenuFrame(menu)
            menu.mainloop()

        else:
            tm.showinfo("Login error", message)


def main():
    root = Tk()
    root.title("Dunder Mifflin GUI")
    root.geometry('{}x{}'.format(270, 80))
    lf = LoginFrame(root)
    root.mainloop()

if __name__ == "__main__":
    main()

Menu.py：

from tkinter import *
from tkinter import ttk

class MenuFrame(Frame):

    def __init__(self, master):
        super().__init__(master)

        mainframe = ttk.Frame(root, padding="3 3 12 12")
        mainframe.grid(column = 0, row = 0, sticky = (N, W, E, S))
        mainframe.columnconfigure(0, weight = 1)
        mainframe.rowconfigure(0, weight = 1)

        name = "John"
        sales = StringVar()
        moreSales = StringVar()
        sales.set("1")

        welcome = "Welcome, " + name + "!"

        sales_entry = ttk.Entry(mainframe, width = 7, textvariable = moreSales)

        ttk.Label(mainframe, text = welcome).grid(column = 2, row = 1, sticky = W)

        ttk.Label(mainframe, text = "Current Sales:").grid(column = 1, row = 2, sticky = W)
        ttk.Label(mainframe, textvariable = sales).grid(column = 2, row = 2, sticky = (E))
        ttk.Label(mainframe, text = "sales").grid(column = 3, row = 2, sticky = W)

        ttk.Label(mainframe, text = "Add Sales").grid(column = 1, row = 3, sticky = W)
        sales_entry.grid(column = 2, row = 3, sticky = (W, E))
        ttk.Button(mainframe, text = "Add", command = MenuFrame.add(sales, moreSales)).grid(column = 3, row = 3, sticky = W)

        ttk.Button(mainframe, text = "Log Out", command = MenuFrame.logout).grid(column = 2, row = 4, sticky = W)

    def add(sales, moreSales):

        try:
            value1 = int(sales.get())
            value2 = int(moreSales.get())
            sales.set(value1 + value2)
        except ValueError:
            pass

    def logout():
        root.destroy()

tkinter没有激活第二个GUI

0 个答案: