Python 如何在成功登录后打开主窗口

我正在用巨蟒。我在我的课程中获得了一个学位，也读了这篇文章：

但是，我无法实现recired事件。我想在登录后打开desctop应用程序的新（主）窗口。出于某种原因，脚本还会突然打开第三个窗口。我真的很沮丧，因为2个das的工作在那东西

谢谢你的帮助：）

---

创建root=Tk（）的新实例时，将自动打开一个小的默认窗口

1）您有root=Tk（）

第二）您拥有初始化的主机

第三）您拥有主要胜利

因此，您有三个窗口

您必须避免在类之外再次调用类Tk（），这是令人讨厌的第三个窗口问题

我建议做的是添加一个def，它只会主循环您的AirsoftGunRack窗口

以下是最终代码：

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

从tkinter导入Tk、标签、按钮、消息框
从tkinter进口*
空气软支架等级：
def uu init（self，master=Tk（））：#这是我的第一个更改，所以我已经在类中初始化了一个Tk窗口
"""
：类型主控：对象
"""
#####登录页面#####
self.master=master
主标题（“登录-Airsoft GunRack 3.0”）
主几何（“450x230+450+170”）
#创建描述
self.username=标签（master，text=“username:”）
self.username.place（relx=0.285，relen=0.298，高度=20，宽度=55）
self.password=标签（master，text=“password:）
self.password.place（relx=0.285，rely=0.468，高度=20，宽度=55）
#创建按钮
self.login\u button=按钮（master，text=“login”）
self.login_按钮位置（relx=0.440，rely=0.638，高度=30，宽度=60）
self.login\u按钮.configure（命令=self.login\u用户）
self.exit_按钮=按钮（master，text=“exit”）#，command=master.quit）
自动退出按钮位置（relx=0.614，RELn=0.638，高度=30，宽度=60）
self.exit\u按钮.configure（命令=self.exit\u登录）
#创建输入框
self.username\u box=条目（主）
self.username\u box.place（relx=0.440，rely=0.298，高度=20，relwidth=0.35）
self.password\u box=输入（主）
self.password_box.place（relx=0.440，rely=0.468，高度=20，relwidth=0.35）
self.password\u box.configure（show=“*”）
self.password\u box.configure（background=“white”）
#创建复选框
self.var=IntVar（）
self.show_password=检查按钮（主控）
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（文本='''show''）
self.show\u password.configure（变量=self.var，命令=self.cb）
def cb（self，）：
如果self.var.get（）==True：
self.password\u box.configure（show=”“）
其他：
self.password\u box.configure（show=“*”）
#赋予登录过程功能
def登录用户（自身）：
name=self.username\u box.get（）
password=self.password\u box.get（）
如果名称=“用户”和密码=“1234”：
self.main_win.deiconify（）#取消隐藏根窗口
self.master.destroy（）#删除顶层窗口
#showinfo（“登录页面”，“登录成功！”）
其他：
messagebox.showwarning（“登录失败”，“用户名或密码不正确！”）
def退出_登录（自我）：
msg=messagebox.askyesno（“退出登录页面”，“您真的想退出吗？”）
如果（味精）：
退出（）
def mainloop_window（self）：#这是帮助我主循环窗口的类函数
self.master.mainloop（）
main_win=顶级（）
主窗口标题（“主窗口”）
主窗口标题（“主窗口”）
主温几何（“800x800+450+170”）
gunrack=AirsoftGunRack（）#我现在不需要传递根目录，因为它在类内部初始化
gunrack.mainloop_window（）#只需mainloop身份验证窗口
#main_win.draw（）
main_win.mainloop（）

请注意，我在这段代码中添加了四条注释。第6、82、93、94行

此更改将打开您使用的窗口

这些当然是我在代码块中唯一的更改

---

如果这会影响您在tkinter项目中的表现，请对此答案进行评论。

是的，@Jim Erginbash！这正是我所希望的。所以，我为main win创建了一个单独的类。我考虑过认证程序。如果登录成功，我的想法是创建一个值为“true”的新变量（login_completed）。在第二步中，在取消隐藏主窗口（撤销命令）之前，类main_win应检查该值是否为“真”。遗憾的是，我不能让它正常工作。不知道在哪里添加代码以及如何添加

这是目前为止的新代码。为了更好地理解，我还重命名了一些参数，它们也属于这个窗口

我还注意到，通过使用框架按钮（X）关闭登录页面，它还将继续创建主窗口的代码。你知道怎么杀死它吗

从tkinter导入Tk、标签、按钮、消息框 从tkinter进口*

    ##### 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

---

身份验证的想法很好

在更高级的级别中，您需要开始使用数据库（我建议使用postgresql）管理tkinter应用程序，并从中管理用户和密码

为了防止X按钮出现错误，您可以在类初始化中添加以下行：

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

还可以在Login类中添加此函数：（定义event_X函数）

这将是最终代码：

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

---

谢谢你的告别。可悲的是，它也不能按我想要的方式正常工作。在登录成功之前，应隐藏主窗口。此外，主窗口将有很多内容，因为它将是m

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