mainwindow.cpp Example File

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 ** This file is part of the QtScxml module of the Qt Toolkit.
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 #include "mainwindow.h"
 #include "ui_mainwindow.h"

 #include <QScxmlStateMachine>
 #include <QStringListModel>

 QT_USE_NAMESPACE

 MainWindow::MainWindow(QScxmlStateMachine *machine, QWidget *parent) :
     QWidget(parent),
     ui(new Ui::MainWindow),
     m_machine(machine)
 {
     ui->setupUi(this);

     connect(ui->digit0, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.0");
     });
     connect(ui->digit1, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.1");
     });
     connect(ui->digit2, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.2");
     });
     connect(ui->digit3, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.3");
     });
     connect(ui->digit4, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.4");
     });
     connect(ui->digit5, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.5");
     });
     connect(ui->digit6, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.6");
     });
     connect(ui->digit7, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.7");
     });
     connect(ui->digit8, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.8");
     });
     connect(ui->digit9, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("DIGIT.9");
     });
     connect(ui->point, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("POINT");
     });
     connect(ui->operPlus, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("OPER.PLUS");
     });
     connect(ui->operMinus, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("OPER.MINUS");
     });
     connect(ui->operStar, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("OPER.STAR");
     });
     connect(ui->operDiv, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("OPER.DIV");
     });
     connect(ui->equals, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("EQUALS");
     });
     connect(ui->c, &QAbstractButton::clicked, [this] {
         m_machine->submitEvent("C");
     });

     m_machine->connectToEvent(QLatin1String("updateDisplay"), this,
                               [this](const QScxmlEvent &event) {
         const QString display = event.data().toMap()
                 .value("display").toString();
         ui->display->setText(display);
     });
 }

 MainWindow::~MainWindow()
 {
     delete ui;
 }