检测点击并获取QTableWidget标题的文本，如何？

#include <QApplication>
#include <QTableWidget>
#include <QStringList>
#include <QHeaderView>

class MyTableWidget : public QTableWidget
{
public:
    MyTableWidget(QWidget *parent = nullptr) : QTableWidget(parent)
    {
        setRowCount(3);
        setColumnCount(3);

        QStringList headers;
        headers << "Column 1" << "Column 2" << "Column 3";
        setHorizontalHeaderLabels(headers);

        connect(this, &QTableWidget::clicked, this, &MyTableWidget::onCellClicked);
    }

private slots:
    void onCellClicked(const QModelIndex &index)
    {
        QTableWidget *tableWidget = qobject_cast<QTableWidget*>(sender());
        if (!tableWidget)
            return;

        QList<QTableWidgetItem*> selectedItems = tableWidget->selectedItems();
        if (selectedItems.isEmpty())
            return;

        QTableWidgetItem *selectedItem = selectedItems.first();
        int column = selectedItem->column();

        QTableWidgetItem *headerItem = tableWidget->horizontalHeaderItem(column);
        if (headerItem)
        {
            QString headerText = headerItem->text();
            qDebug() << "Clicked header text: " << headerText;
        }
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    MyTableWidget tableWidget;
    tableWidget.show();

    return a.exec();
}