Tkinter Ttk Optionmenu Losing Checkmark Highlight When Updating Option List

When I update a ttk.OptionMenu widget using this example: https://stackoverflow.com/a/7403530 , I lose the check mark that showed up before when I selected an item if I was using t

Solution 1:

The ttk version, which you used previously, adds the checkmark functionality by default and a check will appear on the selected item. However, when you manually add items, you'll need to use the method add_radiobutton instead of add_command. This is what enables the check mark (on both tk and ttk versions).

import tkinter.tkk as tkk

def__init__(self, *args, **kwargs):
    ...
    self.om = ttk.OptionMenu(self, self.om_variable)
    ...

def_reset_option_menu(self, options, index=None):
    ...
    menu.add_radiobutton(
        label=string,
        command=tk._setit(self.om_variable, string)
    )
    ...