[Tkinter] Default Values for radiobuttons - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: GUI (https://python-forum.io/forum-10.html) +--- Thread: [Tkinter] Default Values for radiobuttons (/thread-26876.html) |
Default Values for radiobuttons - xuraax - May-17-2020 I am learning to use tkinter and I have a program which includes Radiobuttons and Entry. These work well if I press buttons and insert text into the appropriate widgets each time I start the program. I would like to alter the program to use default values at startup so that then all I have to do is press continue if I want to stay with the defaults. From documentation I understood that this can be done using .invoke() for the radiobuttons but when I run this i get the following error at this strip of code: # radio button button_var = IntVar() radio_1 = Radiobutton( text="Windows", variable=button_var, value=1).place(x=15, y=338) radio_2 = Radiobutton(text="Linux", variable=button_var, value=2).place(x=115, y=338) radio_2.invoke() My intention if for the program to default to the "Linux" option.Can anyone help please? RE: Default Values for radiobuttons - menator01 - May-17-2020 Please use tags when posting code. This works for me. move the .place to radio_1.place() and radio_2.place() import tkinter as tk root = tk.Tk() var = tk.IntVar() r1 = tk.Radiobutton(root, text='Option 1', variable=var, value=1) r1.pack(anchor='w') r2 = tk.Radiobutton(root, text='Option 2', variable=var, value=2) r2.pack(anchor='w') r2.invoke() r3 = tk.Radiobutton(root, text='Option 3', variable=var, value=3) r3.pack(anchor='w') root.mainloop() RE: Default Values for radiobuttons - xuraax - May-17-2020 Thank you for your suggestion and I apologise for not using the tag option. Will do so in the future. Moving the .place()to its own line as you suggest worked perfectly |