如何在用户登录tkinter Py3之前撤消缩放状态窗口

我在寻找一种方法，一旦用户登录，我就可以在缩放状态下打开一个新窗口。这将是主菜单，从代码行11的顶部调用。我可以打开这个新窗口，如果不使用“缩放”状态，也可以取消隐藏它。如果该窗口处于缩放状态，我将如何打开/取消隐藏该窗口？出于某种原因，它会在程序启动时打开它，即使在使用缩放状态时用户没有登录

from tkinter import *
import sqlite3
import hashlib
import os

def main():
  root = Tk()
  root.withdraw()

  mainMenu = main_menu(root)
  loginWindow =  login(root)
  root.mainloop() 

class login(Toplevel):
  def __init__(self, root):
    super().__init__(root)

    width = 600 #sets the width of the window
    height = 600 #sets the height of the window
    widthScreen = self.winfo_screenwidth() #gets the width of the screen
    heightScreen = self.winfo_screenheight() #gets the height of the screen
    x = (widthScreen/2) - (width/2) #finds the center value of x
    y = (heightScreen/2) - (height/2) #finds the center value of y
    self.geometry('%dx%d+%d+%d' % (width, height, x, y))#places screen in center
    self.resizable(width=False, height=False)#Ensures that the window size cannot be changed 
    filename = PhotoImage(file = 'Login.gif') #gets the image from directory
    background_label = Label(image=filename) #makes the image
    background_label.place(x=0, y=0, relwidth=1, relheight=1)#palces the image

    self.__username = StringVar()
    self.__password = StringVar()
    self.__error = StringVar()
    userNameLabel = Label(self, text='UserID: ', bg=None, width=10).place(relx=0.300,rely=0.575)
    userNameEntry = Entry(self, textvariable=self.__username, width=25).place(relx=0.460,rely=0.575)
    userPasswordLabel = Label(self, text='Password: ', bg=None, width=10).place(relx=0.300,rely=0.625)
    userPasswordEntry = Entry(self, textvariable=self.__password, show='*', width=25).place(relx=0.460,rely=0.625)
    errorLabel = Label(self, textvariable=self.__error, bg=None, fg='red', width=35).place(relx=0.508,rely=0.545, anchor=CENTER)
    loginButton = Button(self, text='Login', command=self.login_user, bg='white', width=15).place(relx=0.300,rely=0.675)
    clearButton = Button(self, text='Clear', command=self.clear_entry, bg='white', width=15).place(relx=0.525,rely=0.675)
    self.master.bind('<Return>', lambda event: self.login_user()) #triggers the login subroutine if the enter key is pressed

  def login_user(self):
    username = self.__username.get()
    password = self.__password.get()
    hashPassword = (password.encode('utf-8'))
    newPass = hashlib.sha256()
    newPass.update(hashPassword)
    if username == '':
      self.__error.set('Error! No user ID entered')
    elif password == '':
      self.__error.set('Error! No password entered')
    else:
      with sqlite3.connect ('pkdata.db') as db:
        cursor = db.cursor()
        cursor.execute("select userID, password from users where userID=?",(username,))
        info = cursor.fetchone()
        if info is None:
          self.__error.set('Error! Login details not found!')
        else:
          dbUsername = info[0]
          dbPassword = info[1]
          if username == dbUsername or newPass.hexdigest() == dbPassword:
            loginWindow.withdraw()
            root.deiconify()
          else:
            self.__error.set('Error! please try again')
            self.clear_entry()

  def clear_entry(self):
    self.__username.set('')
    self.__password.set('')



class main_menu():        
  def __init__(self, root):
    self.root = root
    root.state('zoomed')
    root.title("Main Menu")


if __name__ == '__main__':
   main()

---

如果你想打开两个窗口，Toplevel是不错的，但那不是你想要的，是吗？您希望打开一个窗口，然后再打开另一个窗口。因此，与其定义两个窗口，不如定义一个窗口，然后在适当的时候更改它：

类Mainframetk.Tk： 定义初始自我： tk.tk.\uuuuu init\uuuu self self.frame=FirstFrameself 自我框架包装 def changeself，帧： self.frame.pack\u忘记删除当前帧 self.frame=frameself self.frame.pack制作新框架 类FirstFrametk.Frame： 定义初始自我，主控=无，**kwargs: tk.帧。初始帧自身，主帧，**kwargs master.titleEnter密码 master.geometry300x200 self.status=tk.Labelself，fg='red' self.status.pack lbl=tk.Labelself，text='Enter password' lbl.pack self.pwd=tk.Entryself，显示=* 自我包装 自我聚焦 自检 btn=tk.Buttonself，text=Done，command=self.check btn.pack btn=tk.Buttonself，text=Cancel，command=self.quit btn.pack def checkself，事件=无： 如果self.pwd.get==“密码”： self.master.changessecondframe 其他： self.status.configtext=密码错误 类SecondFrametk.Frame： 定义初始自我，主控=无，**kwargs: tk.帧。初始帧自身，主帧，**kwargs 标题主应用程序 master.geometry600x400 lbl=tk.Labelself，text='您成功地访问了主应用程序' lbl.pack 如果uuuu name uuuuu==\uuuuuuuu main\uuuuuuuu： app=大型机 app.mainloop