[ltk-user] listbox api

[Nikita B. Zuev]

Hello,

thanks, I'm doing the same, didn't know that listbox stores them as
strings though. Never used Tk actually ))

2012/11/2 Peter Herth <herth at peter-herth.de>:
> Hi,
>
> I keep a list of the items I inserted into the list box on the Lisp
> side and use the result of listbox-get-selection to look up the items
> in the list. As the objects in that list usually carry more
> information than the pure strings displayed in the list box, that is
> usually more useful anyway.
>
> Peter
>
> On Thu, Nov 1, 2012 at 4:46 PM, Nikita B. Zuev <nikitazu at gmail.com> wrote:
>> Hello,
>>
>> I'm having a little trouble with usage of a listbox in LTK library,
>> and would appreciate some assistance.
>>
>> Documentation states that there is a LISTBOX class
>> http://www.peter-herth.de/ltk/ltkdoc/node25.html
>> but nothing about how to manipulate its contents.
>>
>> Google have helped me to find LISTBOX-APPEND to add items and
>> LISTBOX-GET-SELECTION to
>> retrieve selection. Thing here is LISTBOX-GET-SELECTION returns list
>> of indices, not actual items,
>> and nothing in google says about where to apply index to get actual
>> selected item.
>> That is easy to workaround by using a separate variable to store list
>> of items and pushing to it
>> after adding item to LISTBOX instance, then getting selection from
>> LISTBOX and getting selected
>> item from this variable by index, but I have a feeling that I'm doing
>> it wrong, and overcomplicating
>> things.
>>
>> Also docs say
>> http://www.peter-herth.de/ltk/ltkdoc/node15.html
>> :COMMAND initarg can be used to handle LISTBOX's selection change event, but
>> (MAKE-INSTANCE 'LISTBOX :command (lambda () ... )) fails saying it has
>> no such initarg,
>> well BIND works, so its ok probably.
>>
>> Main question is, can someone please provide me with a little example
>> of LISTBOX's proper usage?
>>
>> LTK library is from the quicklisp repository.
>>
>> Thanks.
>>
>> --
>> Regards,
>> Nikita B. Zuev
>>
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-- 
Regards,
Nikita B. Zuev