Re: Virtual list boxes (using GtkTreeView or other)

["Nuno Lucas" <ntlucas gmail com>]

On 6/1/07, Andreas Stricker <andreas stricker fela ch> wrote:
> Nuno Lucas schrieb:
> > How people do with very large list boxes? I was hopping I could have
> > some form of just seting up the column headers and say I have 10000
> > rows and let the widget ask me for the data when it needs it.
> >
> > It seems a bit heavy to add 10000 rows one at a time, as it seems I'm
> > forced to do even if I "derive" my own ListStore.
>
> You have to derive your own GtkTreeModel, if the predefined GtkListStore
> or GtkTreeStore are not sufficient (They simply stores all data at once).

I may be missing something, but I don't see a way to set the number of
"virtual" rows.

> From what I see in the documentation, the only way to grow is by
appending a single row at a time (which I guess then emits the
"row-changed" signal and updates the scrollbar).

What seems to be missing is a way to say I already have 10k, 100k or
even 1M rows of data ready (at least I will cache that data myself).

Even if I implement my own GtkTreeModel, I don't see a way of escaping
this limitation. At least on the documentation.


Regards,
~Nuno Lucas

> Cheers, Andy