tkraise() 背景问题

Question

我正在使用 tkraise() 在登录页面和注册页面之间切换，但问题是我的代码的第一部分（注册），它没有显示背景图像，而第二部分（登录） ） 工作正常。 有人可以帮我解决这个问题吗？太感谢了。 这是我的代码：

from tkinter import *

from PIL import ImageTk

accountSystem=Tk()

accountSystem.rowconfigure(0, weight=1)

accountSystem.columnconfigure(0, weight=1)

accountSystem.geometry('1280x720+128+72')

accountSystem.title('ACCOUNT SYSTEM')

#Navigating through windows

sign_in=Frame(accountSystem)

sign_up=Frame(accountSystem)

for frame in (sign_in, sign_up):

    frame.grid(row=0, column=0, sticky='nsew')

def show_frame(frame):

    frame.tkraise()

show_frame(sign_up)


#-------------------------------------------------------------------
--
#-------------------------FUNCTIONALLY PART-------------------------

#---------------------------------------------------------------------

def hide():

    openeye.config(file='images/close_eye.png')

    passwordEntry.config(show='*')

    eyeButton.config(command=show)


def show():

    openeye.config(file='images/open_eye.png')

    passwordEntry.config(show='')

    eyeButton.config(command=hide)


def user_enter(event):

    if usernameEntry.get()=='Username':

        usernameEntry.delete(0, END)


def password_enter(event):

    if passwordEntry.get()=='Password':

        passwordEntry.delete(0, END)

def confirmpassword_enter(event):

    if confirmpasswordEntry.get()=='Conform Password':

        confirmpasswordEntry.delete(0, END)

#-------------------------------------------------------------------

#----------------SIGN UP----------------------------------------------

#---------------------------------------------------------------------

#-----BACKGROUND IMAGE-----

bgImage=ImageTk.PhotoImage(file='images/1_signup.png')

bgLabel=Label(sign_up, image=bgImage)

bgLabel.place(x=0, y=0)


heading=Label(sign_up, text='Sign up', font=('Open Sans', 26, 'bold') ,bg='SlateBlue1', fg='white')

heading.place(x=795, y=188)

#-----USERNAME-----

usernameEntry=Entry(sign_up, width=27, font=('Open Sans', 14, 'bold'),bg='SlateBlue1',fg='white', bd=0)

usernameEntry.place(x=705, y=275)

usernameEntry.insert(0, 'Username')

usernameEntry.bind('<FocusIn>', user_enter)

#-----PASSWORD-----

passwordEntry=Entry(sign_in, width=25, font=('Open Sans', 14, 'bold'),bg='SlateBlue1',fg='white', bd=0)

passwordEntry.place(x=705, y=340)

passwordEntry.insert(0, 'Password')

passwordEntry.bind('<FocusIn>', password_enter)

openeye=PhotoImage(file='images/open_eye.png')

eyeButton=Button(sign_up, image=openeye, bd=0, bg='SlateBlue1', activebackground='SlateBlue1',cursor='hand2', command=hide)

eyeButton.place(x=980, y=340)

#-----CONFIRM PASSWORD-----

confirmpasswordEntry=Entry(sign_up, width=25, font=('Open Sans', 14, 'bold'),bg='SlateBlue1',fg='white', bd=0)

confirmpasswordEntry.place(x=705, y=410)

confirmpasswordEntry.insert(0, 'Conform Password')

confirmpasswordEntry.bind('<FocusIn>', confirmpassword_enter)

#REGISTER BUTTON----

registerButton=Button(sign_up, text='Register', font=('Open Sans', 16, 'bold') ,bg='SlateBlue1', fg='white', activeforeground='white', activebackground='SlateBlue1', cursor='hand2', bd=0)

registerButton.place(x=815, y=475)

#----SWITCH INTO LOGIN PAGE-----
loginLabel=Label(sign_up, text="Already have an account?", font=('Open Sans', 9, 'bold'),bg='SlateBlue3', fg='white', bd=0)

loginLabel.place(x=770,y=532)

loginButton=Button(sign_up, text='Login', font=('Open Sans', 9, 'bold underline'),fg='white', bg='SlateBlue3', activeforeground='white', activebackground='SlateBlue3', cursor='hand2', bd=0, command=lambda : show_frame(sign_in))
loginButton.place(x=920, y=530)

#---------------------------------------------------------------------

#----------------SIGN IN----------------------------------------------

#---------------------------------------------------------------------

#-----BACKGROUND IMAGE-----

bgImage=ImageTk.PhotoImage(file='images/1_signin.png')

bgLabel=Label(sign_in, image=bgImage)

bgLabel.place(x=0, y=0)

heading=Label(sign_in, text='Sign in', font=('Open Sans', 26, 'bold') ,bg='SlateBlue1', fg='white')

heading.place(x=815, y=190)

#-----USERNAME------

usernameEntry=Entry(sign_in, width=27, font=('Open Sans', 14, 'bold'),bg='SlateBlue1',fg='white', bd=0)

usernameEntry.place(x=720, y=305)

usernameEntry.insert(0, 'Username')

usernameEntry.bind('<FocusIn>', user_enter)

#-----PASSWORD-----

passwordEntry=Entry(sign_in, width=25, font=('Open Sans', 14, 'bold') ,bg='SlateBlue1',fg='white', bd=0)

passwordEntry.place(x=720, y=380)

passwordEntry.insert(0, 'Password')

passwordEntry.bind('<FocusIn>', password_enter)

openeye=PhotoImage(file='images/open_eye.png')

eyeButton=Button(sign_in, image=openeye, bd=0, bg='SlateBlue1', activebackground='SlateBlue1'
                 ,cursor='hand2', command=hide)
eyeButton.place(x=1000, y=380)

#-----FORGET PASSWORD-----

forgetButton=Button(sign_in, text='Forget Password?', bd=0, bg='SlateBlue3', activebackground='SlateBlue3',cursor='hand2', font=('Open Sans', 10, 'bold'), fg='white', activeforeground='white')
forgetButton.place(x=715, y=460)

#-----lOGIN BUTTON-----

loginButton=Button(sign_in, text='Login', font=('Open Sans', 16, 'bold') ,bg='SlateBlue1', fg='white', activeforeground='white', activebackground='SlateBlue1', cursor='hand2', bd=0)

loginButton.place(x=925, y=455)

#-----SWITCH INTO REGISTER-----

signupLabel=Label(sign_in, text="Don't have an account?", font=('Open Sans', 9, 'bold'), bg='SlateBlue3', fg='white', bd=0)
signupLabel.place(x=730, y=522)

signupButton=Button(sign_in, text='Creat new account', font=('Open Sans', 9, 'bold underline'),fg='white', bg='SlateBlue3', activeforeground='white', activebackground='SlateBlue3', cursor='hand2', bd=0, command=lambda : show_frame(sign_up))

signupButton.place(x=870, y=520)

accountSystem.resizable(0,0)

accountSystem.mainloop()

我更改了登录和注册部分的顺序（将登录部分放在注册部分上方）。但无论我更改了哪一部分，它始终是代码的第一部分，其背景图像没有显示。

Answer 1

但问题是我的代码的第一部分（注册），它没有显示 背景图像，

而第二部分（登录）工作正常

问题可以解决。

在第 86 行，添加以下内容：

bgLabel=Label(sign_up,  image=bgImage)
bgLabel.image = bgImage #<= Add this, so we can see on fly.

第107行，框架应该是

sign_up

而不是

sign_in

passwordEntry=Entry(sign_up, ..)

仅此而已。你准备好出发了。

截图：