Re: dynamic list widget

[Rolf Schaeuble <mail rschaeuble de>]

Am Mon, 25 Dez 2000 02:11:47 schrieb(en) Rolf Schaeuble:
> 
> Am Mon, 25 Dez 2000 00:14:51 schrieb(en) Rolf Schaeuble:
> > Hello,
> > 
> > I need to display lots of data in a clist-like way. I have the data in
> a
> > special format i don't want to copy to an clist-like format because it
> > would need more than the double amount of memory I need without. So my
> > idea
> > is to have a list-widget that keeps just the data for the displayed
> rows
> > in
> > memory. Whenever it has to display a new row it should ask a function
> for
> > the needed data, display it on the screen and forget the data of the
> row
> > which won't be displayed any more. Cause I'm a bloody rookie I don't
> know
> > how to do this. Could anyone give me a hint how to start?
> > 
> 
> I have to add a detail of the problem:
> The list should be in a scrollable conainer. The scrollbar then has as
> upper value the number of data items I have in my own format. When the
> user
> uses the scrollbar, the list should recognize this, find out which rows
> to
> show now, delete rows which won't be shown anymore, and request new rows.
> For the user it should look exactly like a normal clist which contains
> all
> rows, not just the few ones it displays at the moment
> 
> Rolf Schaeuble
> 

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