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List:       kde-devel
Subject:    Re: How I refresh a QTreeView if the model data changes?
From:       John Tapsell <johnflux () gmail ! com>
Date:       2009-12-31 17:04:37
Message-ID: 43d8ce650912310904s718e6e4ew5ff68f8126d71604 () mail ! gmail ! com
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2009/12/31 kuddel-fl <kuddel-fl@gmx.de>:
> Many thanks!
>
> but it's to difficult to log which lines have to removed and which to
> inserted, because the data are stored in another class.
> Now I simply call reset(). Maybe it is slow but it works.

It's probably not much slower, unless you're talking about a huge
number of entries with few changes. Trouble with that approach is that
you lose selection.

I have a similar with the System Activity program - I have to compare
the new list of processes against the old list and work out which have
been added, removed and moved.  This was a big reason why it took so
long to get right.
 
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