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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "calculatorform.h"
++
++ //! [0]
++ CalculatorForm::CalculatorForm(QWidget *parent)
++ : QWidget(parent)
++ {
++ ui.setupUi(this);
++ connect(ui.inputSpinBox1, &QSpinBox::valueChanged, this, &CalculatorForm::updateResult);
++ connect(ui.inputSpinBox2, &QSpinBox::valueChanged, this, &CalculatorForm::updateResult);
++ }
++ //! [0]
++
++ //! [1]
++ void CalculatorForm::updateResult()
++ {
++ const int sum = ui.inputSpinBox1->value() + ui.inputSpinBox2->value();
++ ui.outputWidget->setText(QString::number(sum));
++ }
++ //! [1]