我如何关闭我的登录窗口并打开另一个

Question

你好朋友，我有这个基本的登录窗口，一切都工作正常，但我想在我按下登录并且一切正常时它会关闭并将我发送到另一个窗口，即仪表板

import tkinter as tk
from tkinter import filedialog
from tkinter import *
from PIL import Image,ImageTk
import sqlite3





def login():
    #getting form data
    uname=username.get()
    pwd=password.get()
    #applying empty validation
    if uname=='' or pwd=='':
        message.set("fill the empty field!!!")
    else:
      #open database
      conn = sqlite3.connect('IMS.db')
      #select query
      cursor = conn.execute('SELECT * from employee where eid="%s" and pass="%s"'%(uname,pwd))
      #fetch data 
      if cursor.fetchone():
       message.set("Login success")
        

      else:
       message.set("Wrong ID or password!!!")
#defining loginform function
def Loginform():
    global login_screen
    login_screen = Tk()
    #Setting title of screen
    login_screen.title("TDC Login")
    #setting height and width of screen
    login_screen.geometry("350x250")
    login_screen["bg"]="#1C2833"
    #declaring variable
    global  message;
    global username
    global password
    username = StringVar()
    password = StringVar()
    message=StringVar()
    #Creating layout of login form
    Label(login_screen,width="300", text="Login From", bg="#0E6655",fg="white",font=("Arial",12,"bold")).pack()
    #Username Label
    Label(login_screen, text="ID * ",bg="#1C2833",fg="white",font=("Arial",12,"bold")).place(x=20,y=40)
    #Username textbox
    Entry(login_screen, textvariable=username,bg="#1C2833",fg="white",font=("Arial",12,"bold")).place(x=120,y=42)
    #Password Label
    Label(login_screen, text="Password * ",bg="#1C2833",fg="white",font=("Arial",12,"bold")).place(x=20,y=80)
    #Password textbox
    Entry(login_screen, textvariable=password ,show="*",bg="#1C2833",fg="white",font=("Arial",12,"bold")).place(x=120,y=82)
    #Label for displaying login status[success/failed]
    Label(login_screen, text="",textvariable=message,bg="#1C2833",fg="white",font=("Arial",12,"bold")).place(x=95,y=120)
    #Login button
    Button(login_screen, text="Login", width=10, height=1, command=login, bg="#0E6655",fg="white",font=("Arial",12,"bold")).place(x=125,y=170)
    login_screen.mainloop()
#calling function Loginform
Loginform()

找不到在我当前页面和设置上应用的方法

Answer 1

import tkinter as tk
from tkinter import filedialog
from tkinter import *
from PIL import Image, ImageTk
import sqlite3

def login():
    # getting form data
    uname = username.get()
    pwd = password.get()
    # applying empty validation
    if uname == '' or pwd == '':
        message.set("Fill the empty field!!!")
    else:
        # open database
        conn = sqlite3.connect('IMS.db')
        # select query
        cursor = conn.execute('SELECT * from employee where eid="%s" and pass="%s"' % (uname, pwd))
        # fetch data
        if cursor.fetchone():
            message.set("Login success")
            # Close the login screen
            login_screen.destroy()
            # Open the mainForm
            mainForm()
        else:
            message.set("Wrong ID or password!!!")

# defining loginform function
def Loginform():
    global login_screen
    login_screen = Tk()
    # Setting title of screen
    login_screen.title("TDC Login")
    # setting height and width of screen
    login_screen.geometry("350x250")
    login_screen["bg"] = "#1C2833"
    # declaring variable
    global message
    global username
    global password
    username = StringVar()
    password = StringVar()
    message = StringVar()
    # Creating layout of login form
    Label(login_screen, width="300", text="Login From", bg="#0E6655", fg="white", font=("Arial", 12, "bold")).pack()
    # Username Label
    Label(login_screen, text="ID * ", bg="#1C2833", fg="white", font=("Arial", 12, "bold")).place(x=20, y=40)
    # Username textbox
    Entry(login_screen, textvariable=username, bg="#1C2833", fg="white", font=("Arial", 12, "bold")).place(x=120, y=42)
    # Password Label
    Label(login_screen, text="Password * ", bg="#1C2833", fg="white", font=("Arial", 12, "bold")).place(x=20, y=80)
    # Password textbox
    Entry(login_screen, textvariable=password, show="*", bg="#1C2833", fg="white", font=("Arial", 12, "bold")).place(x=120,
                                                                                                                   y=82)
    # Label for displaying login status[success/failed]
    Label(login_screen, text="", textvariable=message, bg="#1C2833", fg="white", font=("Arial", 12, "bold")).place(
        x=95, y=120)
    # Login button
    Button(login_screen, text="Login", width=10, height=1, command=login, bg="#0E6655", fg="white",
           font=("Arial", 12, "bold")).place(x=125, y=170)
    login_screen.mainloop()

def mainForm():
    # Create the form you want to open
    main_form = Tk()
    main_form.title("Main Form")
    # Add your main form layout and components here
    main_form.mainloop()

# calling function Loginform
Loginform()

还没有测试过，所以请提供反馈，但是当插入正确的凭据时，您应该能够销毁登录表单，之后只需像您已经做的那样调用新表单即可。