qtablewidget edit only numbers

Hello
I use tablewidget to presenet data and in one column user can input data but i dont know how to limit user to enter only numbers and of course on end i must get imputed values trought loop.

Code:

---

while (query1.next()) {
     ui->tableWidget->setItem(i, 0, new QTableWidgetItem(query1.value(0).toString()));
     //ui->tableWidget->EditingState;
     ui->tableWidget->setItem(i, 1, new QTableWidgetItem(QString::number(query1.value(1).toDouble(), 'f', 2)));
     ui->tableWidget->setItem(i, 2, new QTableWidgetItem(""));
     ui->tableWidget->item(i,0)->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEnabled );
     ui->tableWidget->item(i,1)->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEnabled );
     ui->tableWidget->item(i,0)->setTextAlignment(Qt::AlignCenter);
     ui->tableWidget->item(i,1)->setTextAlignment(Qt::AlignRight);
     ui->tableWidget->item(i,2)->setTextAlignment(Qt::AlignRight);
/*
     QLineEdit * tableline = new QLineEdit;
      tableline->setValidator( new QDoubleValidator(0, 100, 2, this) );
      ui->tableWidget->setCellWidget (i, 2,  tableline);
     qDebug() << ui->tableWidget->cellWidget(i,2)->
     */
i++;
}

---

The usual way to do this is to create a custom QStyledItemDelegate and install it on the column using QTableView::setItemDelegateForColumn(). In the createEditor() method for your delegate, you would create a QLineEdit -and- install the QDoubleValidator on that.

Here is a good tutorial on how to do that (by creating a QSpinBox as the custom editor). Beware of the typos. You should find it pretty easy to implement your own delegate from this example.