[Tkinter-discuss] Listbox size

[Bob van der Poel]

I know how to find the number of items. Just like you show.

No, this is not the size of the box. I have maybe 2000 entries. I can set
the current selection, etc with code like this:

  self.lb.select_clear(ACTIVE)   # needed to un-hilite existing selection
  self.lb.activate(x)                     # make new item active
  self.lb.see(x-10)                       # force display from 10 previous
lines
  self.lb.select_set(x)                 # and select the new item

If the listbox is 20 lines high, this works perfectly. But, if it is a
different size, it doesn't center. In my case I don't know the size of box,
so the "-10" is a not-to-intelligent guess.

Thanks.



On Tue, Feb 13, 2018 at 2:49 PM, Bhaskar Chaudhary <bha100710 at gmail.com>
wrote:

> Hi Bob
>
> Are you looking for the number of items in the listbox ?
> If yes this should give you the number of items.
>
> print(len(listbox.get(0, END)))
>
> Given that each item occupies one line in the list box, i think it the
> same as giving the height in lines.
>
> regards
> Bhaskar
>
>
> On 2/13/18, Bob van der Poel <bob at mellowood.ca> wrote:
> > Is there a way to get the current height (hopefully in lines) of a
> listbox?
> > I'd like to center, vertically, the result of a search.
> >
> > --
> >
> > **** Listen to my FREE CD at http://www.mellowood.ca/music/cedars ****
> > Bob van der Poel ** Wynndel, British Columbia, CANADA **
> > EMAIL: bob at mellowood.ca
> > WWW:   http://www.mellowood.ca
> >
>



-- 

**** Listen to my FREE CD at http://www.mellowood.ca/music/cedars ****
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bob at mellowood.ca
WWW:   http://www.mellowood.ca
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