This signal is properly emitted in my model:

bool
vadTableModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (index.isValid() && role == Qt::EditRole) {
this->table[index.row()*C+index.column()] = value.toInt();
emit dataChanged(index, index);
return TRUE;
}
return FALSE;
}

but the question is: which slot of the QAbstractItemView subclass is this signal connected to?
because I have to overwrite this slot code to handle the modifications properly.