when I use is checked to get the listbox state ,porpmpt error

[xidianzou]

    listbox = dlg.ListBox
    print(listbox.items())
    item = listbox.get_item(field)
    if item.is_checked() == True:
        print("T")
    else:
        print("F")

it show error
File "C:\Users\zou-45\AppData\Local\Programs\Python\Python311\Lib\site-packages\comtypes_init_.py", line 274, in getattr
fixed_name = self.map_case[name.lower()]
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
KeyError: 'togglestate_on'

[junkmd]

I previously submitted a PR to resolve this issue.
#1323

It hasn't been merged yet, so I'd like you to try pulling this branch to your local environment and test it out.