如何将项目从一个窗口中的QListWidget传输到另一个窗口中的QListWidget？

signals:
    void sendItem(QString item);

void SenderWindow::on_listWidget_itemClicked(QListWidgetItem *item)
{
    QString selectedItem = item->text();
    emit sendItem(selectedItem);
}

public slots:
    void receiveItem(QString item);

void ReceiverWindow::receiveItem(QString item)
{
    ui->listWidget->addItem(item);
}

SenderWindow sender;
ReceiverWindow receiver;

QObject::connect(&sender, SIGNAL(sendItem(QString)), &receiver, SLOT(receiveItem(QString)));