Qt之：按下Enter，获取QLineEdit的编辑内容

Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
    QLineEdit *edit = new QLineEdit(this);

    connect(edit, SIGNAL(returnPressed()), this, SLOT(slotEditClicked()));
}

void Widget::slotEditClicked()
{
    QLineEdit* button = (QLineEdit*)sender();
    qDebug() << button->text();
}