[Interest] QTreeView and dynamic sorting

[Igor Mironchik]

Forgot to say that I use

d->m_sortModel->setDynamicSortFilter(false);

because of dynamic sorting moves the rows with the same value in a 
sorted column in its sole discretion from time to time.


> Hi.
>
> I use QTreeView to display dynamic data. I.e. rows can be inserted 
> during program execution dynamically and values in some column can be 
> changed dynamically too. But I need QTreeView to be sorted by the 
> given by user column when new rows added.
>
> I've connected to the rowsInserted signal:
>
> connect(d->m_model,
> 	SIGNAL(  rowsInserted(  const  QModelIndex  &,  int,  int  )  ),
> 	this,  SLOT(  rowsAdded(  QModelIndex,  int,  int  )  )  );
>
> And in the slot I do the next:
>
> void
> ChannelView::rowsAdded(  const  QModelIndex  &  parent,  int  start,  int  end  )
> {
> 	Q_UNUSED(  parent  )
> 	Q_UNUSED(  start  )
> 	Q_UNUSED(  end  )
>
>
> 	qDebug()  <<  "SORT"  <<  parent  <<  start  <<  end;
>
> 	d->m_sortModel->sort(  d->m_sortModel->sortColumn(),
> 		d->m_sortModel->sortOrder()  );
> }
>
> But I see that QTreeView doesn't sorted by the given column when the data in that column is static.
>
> In the debug print I see the next:
>
> SORT QModelIndex(-1,-1,0x0,QObject(0x0)) 0 -1
> SORT QModelIndex(-1,-1,0x0,QObject(0x0)) 0 0
> SORT QModelIndex(-1,-1,0x0,QObject(0x0)) 1 1
> SORT QModelIndex(-1,-1,0x0,QObject(0x0)) 2 2
>
> I've inserted three rows only but rowsInserted emitted four times. Why?
>
> What am I doing wrong?
>
> Thanks.
>
> -- 
> Best Regards,
> Igor Mironchik.


-- 
Best Regards,
Igor Mironchik.

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