[Development] QTableView gets freezed in showing data read from SQLite database , which is updated dynamically with 2000 rows in 2s

Mitch Curtis mitch.curtis at qt.io
Tue Jul 12 14:20:41 CEST 2016



> -----Original Message-----
> From: Development [mailto:development-bounces+mitch.curtis=qt.io at qt-
> project.org] On Behalf Of Mitch Curtis
> Sent: Tuesday, 12 July 2016 2:19 PM
> To: Giuseppe D'Angelo <giuseppe.dangelo at kdab.com>; development at qt-
> project.org
> Subject: Re: [Development] QTableView gets freezed in showing data read
> from SQLite database , which is updated dynamically with 2000 rows in 2s
> 
> 
> 
> > -----Original Message-----
> > From: Development [mailto:development-bounces+mitch.curtis=qt.io at qt-
> > project.org] On Behalf Of Giuseppe D'Angelo
> > Sent: Tuesday, 12 July 2016 11:28 AM
> > To: development at qt-project.org
> > Subject: Re: [Development] QTableView gets freezed in showing data
> > read from SQLite database , which is updated dynamically with 2000
> > rows in 2s
> >
> > Il 12/07/2016 10:49, Mitch Curtis ha scritto:
> > > As someone who has more experience with Qt Quick, I gotta ask...
> > > does
> > QTableView create widgets for every row in the model all at once?
> >
> > It does not create any sub widget. The whole point of the design of
> > item views is to use a few delegate objects (1, out of the box) to
> > paint themselves, not to create thousands of sub-widgets.
> 
> So what Andre said ("2k push buttons") is wrong?
> 
> > (Besides, this is the wrong ML for discussing this problem...)
> 
> Why? I'm just clarifying a point brought up in response to someone's
> question about usage of Qt.

Ah, right, I didn't realise the original post was in the dev list..

> > Cheers,
> >
> > --
> > Giuseppe D'Angelo | giuseppe.dangelo at kdab.com | Senior Software
> > Engineer KDAB (UK) Ltd., a KDAB Group company | Tel: UK
> > +44-1625-809908 KDAB - The Qt Experts
> 
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