为什么我的代码不打开 tkinter 窗口？

Question

im trying to build some code that will open new Tkinter window and then there will be a text box that the client would enter text there, and the text will be saved in some variable in my code. i dont understand what doesn`t work, the window is not being opened. Help please..

import sys
from Tkinter import *

def mhello():
    mtext = ment.get()
    mlabel2 = Label(mGui, text = mtext).pack()
    return

mGui = Tk()
ment = StringVar()

mGui.geometry('450x450+500+300')
mGui.title('Nir`s ScreenShare')

mlabel = Label(mGui,text='My Label').pack()

mbutton = Button(mGui, text = 'OK', command = mhello,fg = 'red', bg='blue').pack()

mEntry = Entry(mGui,textvariable=ment).pack()

** im working with python 2.7 if it matters

Answer 1

For every tkinter code, you will need a mainloop() , add this at the end of your script:

mGui.mainloop()

And also, as a hint:

mEntry , mbutton , mlabel are all going to be None because .pack() doesn't return anything. You will need to do them at separate lines.

For example:

mlabel = Label(mGui,text='My Label')
mlabel.pack()

Answer 2

你不见了

mGui.mainloop()

Answer 3

you need a mainloop line

mGui.mainloop()

Answer 4

你需要添加

mGui.mainloop()