How to open main window after successful login

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I am gettin' stared wiith python. I got a udemy course and also read this post: How To Let Your Main Window Appear after succesful login in Tkinter(PYTHON 3.6

Still, I am unable to implement the recired event. I want to open a new (main) window of the desctop app after login. For some reason the script also opens a third window all of a sudden. I am getting really frusted working since 2 das on that stuff...

Thanks for help :)

from tkinter import Tk, Label, Button, messagebox
from tkinter import *

class AirsoftGunRack:


    ##### Main Window #####






    ##### Login Page #####


def __init__(self,master):
    """

    :type master: object
    """

    ##### Login Page #####

    self.master = master
    master.title("Login - Airsoft GunRack 3.0")
    master.geometry("450x230+450+170")


    # Creating describtions

    self.username = Label(master, text="Username:")
    self.username.place(relx=0.285, rely=0.298, height=20, width=55)

    self.password = Label(master, text="Password:")
    self.password.place(relx=0.285, rely=0.468, height=20, width=55)

    # Creating Buttons

    self.login_button = Button(master, text="Login")
    self.login_button.place(relx=0.440, rely=0.638, height=30, width=60)
    self.login_button.configure(command=self.login_user)

    self.exit_button = Button(master, text="Exit")  # , command=master.quit)
    self.exit_button.place(relx=0.614, rely=0.638, height=30, width=60)
    self.exit_button.configure(command=self.exit_login)

    # Creating entry boxes

    self.username_box = Entry(master)
    self.username_box.place(relx=0.440, rely=0.298, height=20, relwidth=0.35)

    self.password_box = Entry(master)
    self.password_box.place(relx=0.440, rely=0.468, height=20, relwidth=0.35)
    self.password_box.configure(show="*")
    self.password_box.configure(background="white")

    # Creating checkbox

    self.var = IntVar()
    self.show_password = Checkbutton(master)
    self.show_password.place(relx=0.285, rely=0.650, relheight=0.100, relwidth=0.125)
    self.show_password.configure(justify='left')
    self.show_password.configure(text='''Show''')
    self.show_password.configure(variable=self.var, command=self.cb)

def cb(self, ):

    if self.var.get() == True:
        self.password_box.configure(show="")
    else:
        self.password_box.configure(show="*")

# Giving function to login process

def login_user(self):
    name = self.username_box.get()
    password = self.password_box.get()

    if name == "user" and password == "1234":
        self.main_win.deiconify() #Unhides the root window
        self.master.destroy()  #Removes the toplevel window
        #messagebox.showinfo("Login page", "Login successful!")

    else:
        messagebox.showwarning("Login failed", "Username or password incorrect!")

def exit_login(self):
    msg = messagebox.askyesno("Exit login page", "Do you really want to exit?")

    if (msg):
        exit()




main_win = Toplevel()
main_win.title("Main Window")
main_win.title("Main Window")
main_win.geometry("800x800+450+170")

root = Tk()
gunrack = AirsoftGunRack(root)
root.mainloop()
#main_win.withdraw()
main_win.mainloop()

The moment you create a new instance of root = Tk() you will automatically get a small default window opened.

1st) You have root = Tk()

2nd) You have the initialized master

3rd) You have the main_win

Therefore you have three windows

You have to avoid to call the class Tk() again outside of the class and that is the annoying 3rd window problem.

What i would suggest to do is to add a def that it will only mainloop your AirsoftGunRack window.

Here is the final code:

from tkinter import Tk, Label, Button, messagebox
from tkinter import *

class AirsoftGunRack:

    def __init__(self,master = Tk()): #This is my first change so i already initialize a Tk window inside the class
        """

        :type master: object
        """

        ##### Login Page #####

        self.master = master
        master.title("Login - Airsoft GunRack 3.0")
        master.geometry("450x230+450+170")


        # Creating describtions

        self.username = Label(master, text="Username:")
        self.username.place(relx=0.285, rely=0.298, height=20, width=55)

        self.password = Label(master, text="Password:")
        self.password.place(relx=0.285, rely=0.468, height=20, width=55)

        # Creating Buttons

        self.login_button = Button(master, text="Login")
        self.login_button.place(relx=0.440, rely=0.638, height=30, width=60)
        self.login_button.configure(command=self.login_user)

        self.exit_button = Button(master, text="Exit")  # , command=master.quit)
        self.exit_button.place(relx=0.614, rely=0.638, height=30, width=60)
        self.exit_button.configure(command=self.exit_login)

        # Creating entry boxes

        self.username_box = Entry(master)
        self.username_box.place(relx=0.440, rely=0.298, height=20, relwidth=0.35)

        self.password_box = Entry(master)
        self.password_box.place(relx=0.440, rely=0.468, height=20, relwidth=0.35)
        self.password_box.configure(show="*")
        self.password_box.configure(background="white")

        # Creating checkbox

        self.var = IntVar()
        self.show_password = Checkbutton(master)
        self.show_password.place(relx=0.285, rely=0.650, relheight=0.100, relwidth=0.125)
        self.show_password.configure(justify='left')
        self.show_password.configure(text='''Show''')
        self.show_password.configure(variable=self.var, command=self.cb)

    def cb(self, ):

        if self.var.get() == True:
            self.password_box.configure(show="")
        else:
            self.password_box.configure(show="*")

    # Giving function to login process

    def login_user(self):
        name = self.username_box.get()
        password = self.password_box.get()

        if name == "user" and password == "1234":
            self.main_win.deiconify() #Unhides the root window
            self.master.destroy()  #Removes the toplevel window
            #messagebox.showinfo("Login page", "Login successful!")

        else:
            messagebox.showwarning("Login failed", "Username or password incorrect!")

    def exit_login(self):
        msg = messagebox.askyesno("Exit login page", "Do you really want to exit?")
        if (msg):
            exit()

    def mainloop_window(self): #This is the class function that helps me to mainloop the window
        self.master.mainloop()




main_win = Toplevel()
main_win.title("Main Window")
main_win.title("Main Window")
main_win.geometry("800x800+450+170")

gunrack = AirsoftGunRack() # I dont need to pass the root now since its initialized inside the class
gunrack.mainloop_window() # Just mainlooping the authentication window
#main_win.withdraw()
main_win.mainloop()

Notice that i added four comments to this code. In lines 6,82,93,94

This changes will open the windows you worked on.

Those are of course my only changes in your code block.

Please comment this answer if it affects your performance in the tkinter project.

QT C++ GUI Tutorial 12- How to open a new window after successful , c++ - How would I open a new window from a button in the main How to show another window Duration: 10:21 Posted: Sep 17, 2013 2) Modify the Main method in Program.cs to take a result from Form1 (successful login or close application) and then display Form2 or close down as appropriate. 3) Make Form2 your startup form, and display your login form as part of the constructor.

Yes, @Jim Erginbash! That's pretty much how I want it to work. So, I created a seperate class for main win. I thought about the authentification procedure. My idea is to create a new variable( login_completed) with the value "true", if login was successful. In the second step the class main_win shall check if that value is on "true" before unhiding the main window (withdraw command). Sadly, I cant get it work right. Don't know where to add the code and how.

This is the new code so far. I have also renamed some parameters for better understanding, whih window they belong too.

I also noticed, that by closing the login page with the frame button (X) it will also proceed with the code creating the main window. Do you know how to kill it?

from tkinter import Tk, Label, Button, messagebox from tkinter import *

    ##### Login Page #####

class Login_Page:

def __init__(self,login = Tk()): #This is my first change so i already initialize a Tk window inside the class
    """

    :type login: object
    """


    self.login = login
    login.title("Login - Airsoft GunRack 3.0")
    login.geometry("450x230+450+170")


    # Creating describtions

    self.username = Label(login, text="Username:")
    self.username.place(relx=0.285, rely=0.298, height=20, width=55)

    self.password = Label(login, text="Password:")
    self.password.place(relx=0.285, rely=0.468, height=20, width=55)

    # Creating Buttons

    self.login_button = Button(login, text="Login")
    self.login_button.place(relx=0.440, rely=0.638, height=30, width=60)
    self.login_button.configure(command=self.login_user)

    self.login_completed = IntVar()

    self.exit_button = Button(login, text="Exit")  # , command=master.quit)
    self.exit_button.place(relx=0.614, rely=0.638, height=30, width=60)
    self.exit_button.configure(command=self.exit_login)

    # Creating entry boxes

    self.username_box = Entry(login)
    self.username_box.place(relx=0.440, rely=0.298, height=20, relwidth=0.35)

    self.password_box = Entry(login)
    self.password_box.place(relx=0.440, rely=0.468, height=20, relwidth=0.35)
    self.password_box.configure(show="*")
    self.password_box.configure(background="white")

    # Creating checkbox

    self.var = IntVar()
    self.show_password = Checkbutton(login)
    self.show_password.place(relx=0.285, rely=0.650, relheight=0.100, relwidth=0.125)
    self.show_password.configure(justify='left')
    self.show_password.configure(text='''Show''')
    self.show_password.configure(variable=self.var, command=self.cb)

def cb(self, ):

    if self.var.get() == True:
        self.password_box.configure(show="")
    else:
        self.password_box.configure(show="*")

# Giving function to login process

def login_user(self):
    name = self.username_box.get()
    password = self.password_box.get()
    login_completed = self.login_completed.get()

    if name == "user" and password == "1234":
        #messagebox.showinfo("Login page", "Login successful!")
        self.login.destroy()  #Removes the toplevel window
        #self.main_win.deiconify() #Unhides the root window
        self.login_completed == 1

    else:

        messagebox.showwarning("Login Failed - Acess Denied", "Username or Password incorrect!")

        #return

def exit_login(self):
    msg = messagebox.askyesno("Exit login page", "Do you really want to exit?")
    if (msg):
        exit()

def mainloop_window(self): #This is the class function that helps me to mainloop the window
    self.login.mainloop()


login_page = Login_Page() # I dont need to pass the root now since its initialized inside the class
login_page.mainloop_window() # Just mainlooping the authentication window



   ##### Main Window #####




class Main_Win:

def __init__(self,main_win = Tk()): #This is my first change so i already initialize a Tk window inside the class
    """

    :type main_win: object
    """

    #main_win.withdraw()
    #self.main_win.deiconify() #Unhides the root window
    self.main_win = main_win
    main_win.title("Airsoft GunRack 3.0")
    main_win.geometry("900x500+250+130")







def mainloop_window(self): #This is the class function that helps me to mainloop the window
    self.main_win.mainloop()



main_win = Main_Win() # I dont need to pass the root now since its initialized inside the class

main_win.mainloop_window() # Just mainlooping the authentication window

Python PyQt : Open New Window when Authentication successful , How can I navigate from a main window to dialog window if I have How to pass your user Duration: 14:27 Posted: Mar 26, 2016 The other thing is that if you have your .html file one surely can bypass your login.php and open .html page directly. Third thing is I don't know what your PHP code is going to do, probably you should take your HTML part to first site and this PHP code to other php page that makes logging.

The idea of your authentication is good.

In more advanced levels, you need to start managing your tkinter application with a database ( i suggest postgresql) and manage your users and passwords from there

In order to prevent the bug with the X button, you can add in the class initialization the following line:

login.protocol("WM_DELETE_WINDOW",self.event_X)

Also add this function in the Login class: (define the event_X function)

    def event_X(self):
        if messagebox.askokcancel("Exit", "Are you sure you want to exit?"):
            exit()

This will be the final code:

from tkinter import Tk, Label, Button, messagebox
from tkinter import *


##### Login Page #####

class Login_Page:

    def __init__(self, login=Tk()):  # This is my first change so i already initialize a Tk window inside the class
        """

        :type login: object
        """
        self.login = login
        login.protocol("WM_DELETE_WINDOW",self.event_X)
        login.title("Login - Airsoft GunRack 3.0")
        login.geometry("450x230+450+170")

    # Creating describtioneves

        self.username = Label(login, text="Username:")
        self.username.place(relx=0.285, rely=0.298, height=20, width=55)

        self.password = Label(login, text="Password:")
        self.password.place(relx=0.285, rely=0.468, height=20, width=55)

        # Creating Buttons

        self.login_button = Button(login, text="Login")
        self.login_button.place(relx=0.440, rely=0.638, height=30, width=60)
        self.login_button.configure(command=self.login_user)

        self.login_completed = IntVar()

        self.exit_button = Button(login, text="Exit")  # , command=master.quit)
        self.exit_button.place(relx=0.614, rely=0.638, height=30, width=60)
        self.exit_button.configure(command=self.exit_login)

        # Creating entry boxes

        self.username_box = Entry(login)
        self.username_box.place(relx=0.440, rely=0.298, height=20, relwidth=0.35)

        self.password_box = Entry(login)
        self.password_box.place(relx=0.440, rely=0.468, height=20, relwidth=0.35)
        self.password_box.configure(show="*")
        self.password_box.configure(background="white")

        # Creating checkbox

        self.var = IntVar()
        self.show_password = Checkbutton(login)
        self.show_password.place(relx=0.285, rely=0.650, relheight=0.100, relwidth=0.125)
        self.show_password.configure(justify='left')
        self.show_password.configure(text='''Show''')
        self.show_password.configure(variable=self.var, command=self.cb)

    def event_X(self):
        if messagebox.askokcancel("Exit", "Are you sure you want to exit?"):
            exit()

    def cb(self, ):
        if self.var.get() == True:
            self.password_box.configure(show="")
        else:
            self.password_box.configure(show="*")


# Giving function to login process

    def login_user(self):
        name = self.username_box.get()
        password = self.password_box.get()
        login_completed = self.login_completed.get()

        if name == "user" and password == "1234":
            # messagebox.showinfo("Login page", "Login successful!")
            self.login.destroy()  # Removes the toplevel window
            # self.main_win.deiconify() #Unhides the root window
            self.login_completed == 1

        else:
            messagebox.showwarning("Login Failed - Acess Denied", "Username or Password incorrect!")

        # return


    def exit_login(self):
        msg = messagebox.askyesno("Exit login page", "Do you really want to exit?")
        if (msg):
            exit()


    def mainloop_window(self):  # This is the class function that helps me to mainloop the window
        self.login.mainloop()


login_page = Login_Page()  # I dont need to pass the root now since its initialized inside the class
login_page.mainloop_window()  # Just mainlooping the authentication window


    ##### Main Window #####


class Main_Win:
    def __init__(self, main_win=Tk()):  # This is my first change so i already initialize a Tk window inside the class
        self.main_win = main_win
        main_win.title("Airsoft GunRack 3.0")
        main_win.geometry("900x500+250+130")


    def mainloop_window(self):  # This is the class function that helps me to mainloop the window
        self.main_win.mainloop()


main_win = Main_Win()  # I dont need to pass the root now since its initialized inside the class
main_win.mainloop_window()  # Just mainlooping the authentication window

Learning Salesforce Visual Workflow and Process Builder, after. login. Often, businesses have a requirement to display a message to the Screen element and Login Flow to launch the Flow after successful login. the Screen element onto the canvas; it will open a Screen element window for you. 4. But after a successful login, I would like to be redirected back to calling URL ("/customers" in this case). I did found another solution using storing window

How to open a new window after successful Login video lecture , How to open a new window after successful Login tutorial of QT C++ GUI course Online Tutorials. How to show another window from mainwindow in QT Login When the login dialog closes, you'll check its DialogResultproperty to see if the login was successful. If it was, you can start the main form using Application.Run(thus creating the main message loop); otherwise, you can exit the application without showing any form at all.

Computational Biology: Unix/Linux, data processing and programming , In that case. you boot the computer and get directly to the login screen. Depending on In that case. you have to open a terminal window in order to follow the examples given in this script. After successful login. lines 3 and 4 pop up. Line 3  With this source code, you can make a login form with java gui and then, when you click at login button, you will redirect to a new frame in java gui, this is very important if you want to make a big project with java. This is will make securable program. With this frame, you must type your username and password.

How can I open another window using tkinter?, I think you're asking how to have your login window disappear after a successful login and have your main window appear. I included some  In this article we use JavaScript for validation. First we will create a login page where the user will provide their respective credentials, username and password. After successful login the control moves to the details page where all the information of that user is displayed. Table Creation Now let's move to the code. Login.aspx

Comments
  • Thx for your adivce. Sadly, it doesnt work right the way I want it too. The main window shall be hidden until login was successful. Furthermore the main window will have a lot of content, since it will be the main application. Shall I initiate it as its own class too?
  • Yes that would be great.And also create a condition that till the authentication is not succeeded do not show up the main window.