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

[Mitch Curtis]

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?

> -----Original Message-----
> From: Development [mailto:development-bounces+mitch.curtis=qt.io at qt-
> project.org] On Behalf Of André Somers
> Sent: Monday, 11 July 2016 8:34 PM
> 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
> 
> 
> 
> Op 09/07/2016 om 20:01 schreef swarit wipra:
> > Hi folks,
> >
> > i have issues in showing huge data in QTableView ,data read from
> > sqlite database which is being updated dynamically .. 2k rows in 2s.
> > i am using QSQLRelationModel
> > let me describe the scenario in detail.
> >
> > My Qt application has a view i.e QTableView , each row has following
> > structure:
> >
> >  ****************************************
> >  *QPushButton*|QLabel | QLabel | QLabel *
> >  ****************************************
> >  i have created it using QItemDelegate
> >
> >  each row isinserted dynamicaly , after sometime gui gets freezed.
> >
> > could anyone tell me the way to fix the issue.
> Don't implement it like this. You are creating 8k widgets and act suprised
> that it isn't fast... Even if you did not use QLabel but the default
> delegate, 2k push buttons is still pushing it I think.
> 
> Note that this is by no means a new issue. Search and you will find better
> options, even ones using widgets but creating far less instances.
> 
> André
> 
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