Why my code doesn`t open tkinter window?

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

Hello. Looking at your question history, you haven't accepted an answer yet. If any answer has solved your question please consider accepting it by clicking the check-mark. This indicates to the wider community that you've found a solution and gives some reputation to both the answerer and yourself. Of course, there is no obligation to do this. — Lafexlos
– Lafexlos, Commented Jun 20, 2017 at 8:17

Taku · Accepted Answer · 2017-04-16 22:41:43Z

7

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()

edited Apr 16, 2017 at 22:41

answered Apr 16, 2017 at 22:36

Taku

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4 Comments

steffen Over a year ago

hehe, you were 40 seconds faster ;)

utan nuta Over a year ago

Traceback (most recent call last): File "C:/Users/abc/project/textbox.py", line 21, in <module> ment.mainloop() AttributeError: StringVar instance has no attribute 'mainloop'

Taku Over a year ago

Are you sure you copied correctly?, there shouldn't be any error

Taku Over a year ago

@utannuta I think you copied ment.mainloop() instead of mGui.mainloop()

steffen · Accepted Answer · 2017-04-16 22:37:27Z

0

You are missing

mGui.mainloop()

answered Apr 16, 2017 at 22:37

steffen

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Comments

Nima Aref · Accepted Answer · 2018-11-13 02:24:45Z

-1

you need a mainloop line

mGui.mainloop()

answered Nov 13, 2018 at 2:24

Nima Aref

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1 Comment

Ivo Mori Over a year ago

Before answering an old question having other answers ensure your answer adds something new or is otherwise helpful in relation to them.There are already two older answers, stackoverflow.com/a/43442884/5698098 and stackoverflow.com/a/43442879/5698098, which your answer duplicates here. Duplication is rarely something good. Please edit your post; you can also refer to this contribution guide.

kk. · Accepted Answer · 2020-09-24 09:09:04Z

-1

you need to add

mGui.mainloop()

edited Sep 24, 2020 at 9:09

kk.

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answered Sep 24, 2020 at 8:21

jeffery jefferson

1

2 Comments

maciejwww Over a year ago

edit your answer - add code brackets (`/``), correct typo, add maybe more details.

Ivo Mori Over a year ago

Welcome to Stack Overflow. Before answering an old question having other answers ensure your answer adds something new or is otherwise helpful in relation to them. There're already these two answers (stackoverflow.com/a/43442884/5698098, stackoverflow.com/a/53272877/5698098) which state exactly the same answer you added again today. There's rarely a good reason for duplication. – Please take the tour to learn how Stack Overflow works and also read How do I write a good answer?.

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