Tkinter: messagebox doesn`t work right. (get two windows)

Question

I am using python 3. If I opan an error messagebox, i get two frames, one is emty and one is the error-window. That is my code:

from tkinter import messagebox

messagebox.showwarning('warning', 'warning')

Does this answer your question? [Tkinter messagebox without window?](https://stackoverflow.com/questions/17280637/tkinter-messagebox-without-window) — Michael Litvin, Jun 30 '21 at 12:11

score 2 · Accepted Answer · answered Aug 02 '17 at 00:59

2

Everything works correctly in your example. The empty window is the main window of Tk. It is always open when you start any Tk program. You can minimize it if you want, but closing it terminates the main loop.

answered Aug 02 '17 at 00:59

DYZ

55,249
10
64
93

score 1 · Answer 2 · answered Jul 11 '21 at 13:45

1

Try this:

  root = tkinter.Tk()
  root.withdraw()
  messagebox.showwarning('warning', 'warning')

answered Jul 11 '21 at 13:45

Ameneh Sh

11
2

Could you help make this answer more useful by clarifying on why this would fix the issue? – Simas Joneliunas Jul 12 '21 at 00:45

score 0 · Answer 3 · answered Aug 02 '17 at 11:00

Thank you DYZ, in my code is no main window, (eg.: main = Tk() ... main.mainloop), because of that the warning massage create one. I could solve the problem by create one and minimize it. at the end of massagebox I destroyed it to continue in code.

from tkinter import *

from tkinter import messagebox

main = Tk()
main.geometry("500x400+300+300")
def message():
  main.geometry("0x0")
  messagebox.showwarning("Say Hello", "Hello World")
  main.destroy()
B1 = Button(main, text = "Start Dialog",fg="dark green", command = message)
B1.pack()

main.mainloop()

print("finish dialog")

Tkinter: messagebox doesn`t work right. (get two windows)

3 Answers3