How to get the position of QTableWidget when right-clicking?

[MasterBlade]

Hello, I have a QTableWidget and want to add context menu to it. I used the following code to locate the row. But during my debugging, the row always gets a value of -1. What's wrong with it?
Subtype is the name for the QTableWidget

QModelIndex index = ui->Subtype->indexAt(QCursor::pos());
int row = index.row();

[Taz742]

@MasterBlade
Why do you need row ? to get the item from tableWidget?

If yes you can do this :

    ui->tableWidget->setContextMenuPolicy(Qt::CustomContextMenu);

    connect(ui->tableWidget, &QTableWidget::customContextMenuRequested, this, [=](QPoint pos) {
        auto item = ui->tableWidget->itemAt(pos);
        if (item) {
            //logic
        } else {
            //logic
        }
    });

Or if you want index you can do this:

    ui->tableWidget->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(ui->tableWidget, &QTableWidget::customContextMenuRequested, this, [=](QPoint pos) {
        auto index = ui->tableWidget->indexAt(pos);
        if (index.isValid()) {
            qDebug() << index.row();
        }
    });