[Qt-interest] Infinite loop with QHeaderView::sortIndicatorChanged

[Sean Harmer]

On Saturday 16 May 2009 20:44:24 Stephen Collyer wrote:
> I'm trying to implement column sorting in a QTableView. I have
> code like so:
>
> connect(tx_table_view_->horizontalHeader(), SIGNAL(
> sortIndicatorChanged(int, Qt::SortOrder) ),
>             this,               SLOT( sort_by_column(int, Qt::SortOrder) )
> );
>
>  ...
>
> void MDPMainWindow::sort_by_column(int logicalIndex, Qt::SortOrder order)
> {
>     tx_table_view_->sortByColumn(logicalIndex, order);
> }
>
> where sort_by_column is a slot in the current class, and tx_table_view_
> is a QTableView*.
>
> When I click on a sort indicator in the header, sort_by_column(..) is
> called in some kind of infinite loop until the app dumps core. I guess the
> call to QTableView::sortByColumn is causing the signal to be reemitted for
> some reason, but I can't see why.
>
> Can someone explain what I'm doing wrong here ?
Can't you simply call QTableView::setSortingEnabled( true ) when you 
initialise your view and let the default implementation handle everything for 
you?

Sean