Question

Is there a signal which is emitted when the user selects a row in QTableView by mouse (single selection model)?

Answer 1

Each view has a Selection model :

QItemSelectionModel * QAbstractItemView::selectionModel () const

and with the selection model you can retrieve lots of informations, in your case :

QModelIndexList QItemSelectionModel::selectedRows ( int column = 0 ) const

So :

myTableView->selectionModel()->selectedRows();

You can then retrieve this informations through a signal like :

void QItemSelectionModel::selectionChanged ( const QItemSelection & selected, const QItemSelection & deselected )   [signal]

Hope it helps !