On 04Nov2024 16:32, Ulrich Goebel <m...@fam-goebel.de> wrote:
I would like to build a class ScrolledListbox, which can be packed somewhere in ttk.Frames. What I did is to build not really a scrolled Listbox but a Frame containing a Listbox and a Scrollbar:

That's what I would build too.

class FrameScrolledListbox(ttk.Frame):
   def __init__(self, *args, **kwargs):
       super().__init__(*args, **kwargs)
       # build Listbox and Scrollbar
       self.Listbox = tk.Listbox(self)
       self.Scrollbar = ttk.Scrollbar(self)
[...]
But it would be a bit nicer to get a class like

class ScrolledListbox(tk.Listbox):
   ...

So it would be used that way:

scrolledListbox = ScrolledListbox(main)
scrolledListbox.config(...)

Probably you want to proxy various methods to the enclosed widgets. Possibly you want to do that with parameters in `__init__` also.

Example:

    class FrameScrolledListbox(ttk.Frame):
        def __init__(self, *frame_args, *, height=None, jump=None, **frame_kw):
            super().__init__(*frame_args, **frame_kw)
            self.Listbox = tk.Listbox(self, height=height)
            self.Scrollbar = ttk.Scrollbar(self, jump=jump)
            ........

        def config(self, *a, **kw):
            return self.Listbox.config(*a, **kw)

and so forth for the various listbox methods you want to proxy to the listbox itself. You could pass scroll specific methods to the scrollbar as well.

Cheers,
Cameron Simpson <c...@cskk.id.au>
--
https://mail.python.org/mailman/listinfo/python-list

Reply via email to