如何使用QLineEdit过滤QListWidget？

QLineEdit *lineEdit = new QLineEdit(this);
QListWidget *listWidget = new QListWidget(this);

connect(lineEdit, &QLineEdit::textChanged, this, &MainWindow::filterList);

void MainWindow::filterList(const QString &text)
{
    for (int i = 0; i < listWidget->count(); ++i) {
        QListWidgetItem *item = listWidget->item(i);
        if (item->text().contains(text, Qt::CaseInsensitive)) {
            item->setHidden(false);
        } else {
            item->setHidden(true);
        }
    }
}

listWidget->addItem("Item 1");
listWidget->addItem("Item 2");
listWidget->addItem("Item 3");
// ...