How do I handle the window close event in Tkinter?

by

Tkinter supports a mechanism called protocol handlers. Here, the term protocol refers to the interaction between the application and the window manager. The most commonly used protocol is called WM_DELETE_WINDOW, and is used to define what happens when the user explicitly closes a window using the window manager.

You can use the protocol method to install a handler for this protocol (the widget must be a Tk or Toplevel widget):

Here you have a concrete example:

import tkinter as tk
from tkinter import messagebox

root = tk.Tk()

def on_closing():
    if messagebox.askokcancel("Quit", "Do you want to quit?"):
        root.destroy()

root.protocol("WM_DELETE_WINDOW", on_closing)
root.mainloop()

More Related Contents:

  1. How do you run your own code alongside Tkinter’s event loop?
  2. How to bind self events in Tkinter Text widget after it will binded by Text widget?
  3. Getting a callback when a Tkinter Listbox selection is changed?
  4. How to set the text/value/content of an `Entry` widget using a button in tkinter
  5. How to pass an argument to event handler in tkinter?
  6. How do I insert a JPEG image into a python Tkinter window?
  7. How to add a question mark [?] button on the top of a tkinter window
  8. Tkinter: Mouse drag a window without borders, eg. overridedirect(1)
  9. How do I create child windows with Python tkinter?
  10. tkinter: Open a new window with a button prompt [closed]
  11. Tkinter GUI, I/O & Threading: When to use queues, when events?
  12. How to run a code whenever a Tkinter widget value changes?
  13. Getting the widget that triggered an Event?
  14. How to handle a Button click event
  15. Is it possible to run only a single step of the asyncio event loop
  16. ModX in event.state in tkinter?
  17. python gui events out of order
  18. tkinter creating buttons in for loop passing command arguments
  19. Making python/tkinter label widget update?
  20. While Loop Locks Application
  21. How do I get rid of Python Tkinter root window?
  22. Which tkinter modules were renamed in Python 3?
  23. cx_Freeze converted GUI-app (tkinter) crashes after pressing plot button
  24. Difference between “grid” and “pack” geometry managers
  25. Disable / Enable Button in TKinter
  26. How to select at the same time from two Listbox?
  27. How do I bundle a Python application including dependencies into a Windows Installer package for distribution?
  28. Is anyone know how to connect tkinter webcam to Yolov5?
  29. Trigger an event when clipboard content changes
  30. Tkinter ttk see custom theme settings

Leave a Comment