Re: widget for directory view

[Gábor Szabó <szabgab gmail com>]

On 7/24/05, A. Pagaltzis <pagaltzis gmx de> wrote:
> * Gábor Szabó <szabgab gmail com> [2005-07-24 09:45]:
> > I would like to have that nice directory browser that has small
> > squares with + signs when the item is expandable and - when it
> > is expanded.
> >
> > Which widget should I use ?
>
> That's a TreeView. How exactly it looks, whether it uses the
> customary triangle expanders or +/- squares, is not up to you,

yeah, as I just ran the demo on windows today for the first time
I noticed that it uses the [+] stuff there.

Now my main question is how do I code it if I cannot read the whole 
directory tree into memory at once.
I'd like to have expanding mark [+] or whatever I get on every directory
that has subdirectories. So when I show the first directory list I need to read
the next level as well but I cannot read more. (it might be very deep
and reading
each directory takes a long time, it is over the net)

So I read twop levels. Now when the user expands one of the entries I
need to go to all of its subdirectories read them and somehow add them to
the tree. Is there an example of such code ?
Is my approach good?

Gabor