{"id":1577,"date":"2020-12-10T02:03:18","date_gmt":"2020-12-10T02:03:18","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=1577"},"modified":"2021-01-07T07:37:58","modified_gmt":"2021-01-07T07:37:58","slug":"tkinter-askokcancel","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/tkinter\/tkinter-askokcancel\/","title":{"rendered":"Tkinter askokcancel"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to use the Tkinter askokcancel()<\/code> function to show a confirmation dialog.<\/p>\n\n\n\n

Introduction to the Tkinter askokcancel() function #<\/a><\/h2>\n\n\n\n

The askokcancel()<\/code> function shows a confirmation dialog that has two buttons: OK<\/code> and Cancel<\/code>.<\/p>\n\n\n

answer = askokcancel(title, message, **options)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
If you click the OK<\/code> button, the function returns True<\/code>. However, if you click the Cancel<\/code> button, the function returns False<\/code>.<\/p>\n\n\n\n
Tkinter askokcancel() example #<\/a><\/h2>\n\n\n\n
The following program shows a Delete All<\/strong> button. If you click the button, the program will show a confirmation dialog that has two buttons: OK<\/code> and Cancel<\/code>.<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
If you click the OK<\/code> button, the program will show a message box indicating that all the data has been deleted successfully:<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
The program:<\/p>\n\n\n
import<\/span> tkinter as<\/span> tk\nfrom<\/span> tkinter import<\/span> ttk\nfrom<\/span> tkinter.messagebox import<\/span> askokcancel, showinfo, WARNING\n\n# create the root window<\/span>\nroot = tk.Tk()\nroot.title('Tkinter Ok\/Cancel Dialog'<\/span>)\nroot.geometry('300x150'<\/span>)\n\n# click event handler<\/span>\n\n\ndef<\/span> confirm<\/span>()<\/span>:<\/span>\n    answer = askokcancel(\n        title='Confirmation'<\/span>,\n        message='Deleting will delete all the data.'<\/span>,\n        icon=WARNING)\n\n    if<\/span> answer:\n        showinfo(\n            title='Deletion Status'<\/span>,\n            message='The data is deleted successfully'<\/span>)\n\n\nttk.Button(\n    root,\n    text='Delete All'<\/span>,\n    command=confirm).pack(expand=True<\/span>)\n\n\n# start the app<\/span>\nroot.mainloop()<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The following program does the same as the program above but use the object-oriented programming approach:<\/p>\n\n\n
import<\/span> tkinter as<\/span> tk\nfrom<\/span> tkinter import<\/span> ttk\nfrom<\/span> tkinter.messagebox import<\/span> askokcancel, showinfo, WARNING\n\n\nclass<\/span> App<\/span>(tk.Tk)<\/span>:<\/span>\n    def<\/span> __init__<\/span>(self)<\/span>:<\/span>\n        super().__init__()\n\n        self.title('Tkinter Ok\/Cancel Dialog'<\/span>)\n        self.geometry('300x150'<\/span>)\n\n        delete_button = ttk.Button(\n            self,\n            text='Delete All'<\/span>,\n            command=self.confirm)\n\n        delete_button.pack(expand=True<\/span>)\n\n    def<\/span> confirm<\/span>(self)<\/span>:<\/span>\n        answer = askokcancel(\n            title='Confirmation'<\/span>,\n            message='Deleting will delete all the data.'<\/span>,\n            icon=WARNING)\n\n        if<\/span> answer:\n            showinfo(\n                title='Deletion Status'<\/span>,\n                message='The data is deleted successfully'<\/span>)\n\n\nif<\/span> __name__ == \"__main__\"<\/span>:\n    app = App()\n    app.mainloop()<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Summary #<\/a><\/h2>\n\n\n\n
  • Use the Tkinter askokcancel()<\/code> function to display a confirmation dialog with two buttons OK<\/code> and Cancel<\/code>.<\/li>
  • The askokcancel()<\/code> function returns True<\/code> if you click the OK<\/code> button and False<\/code> if you click the Cancel<\/code> button.<\/li><\/ul>\n
    \n\t
    \n\t\t
    Was this tutorial helpful ?<\/div>\n\t\t
    \n\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t Yes <\/span>\n\t\t\t<\/button>\n\n\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t No <\/span>\n\t\t\t<\/button>\n\t\t<\/div>\n\t<\/header>\n\n\t
    \n\t\t
    \n\t\t\t
    <\/div>\n\t\t\t