How to handle the window close event in tkinter?

@kadin 

In tkinter, you can handle the window close event by using the protocol method. Here is an example of how you can handle the window close event:

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import tkinter as tk

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

root = tk.Tk()
root.protocol("WM_DELETE_WINDOW", on_closing)

root.mainloop()

In this example, the on_closing function is called when the close button on the window is pressed. It will show a message box asking the user if they want to quit. If the user clicks "OK", the window will be destroyed.