how to get notified when a new row is added into a QTableView ?

[aresa]

hi,
i need to do some operation to every row of a QTableView, but the number of rows is varying from time to time, thus i need to get notified when row count changes in a QTableView?
how can i do that ?

i tried the following, but 'rowCountChanged' is never called.

class TableView : public QTableView
{
Q_OBJECT

public:

TableView(QWidget *parent = 0) : QTableView(parent)
{

}

protected Q_SLOTS:

void rowCountChanged(int oldCount, int newCount)
{
/// CP1
}
};