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#include <QAxBindable>
#include <QAxFactory>
#include <QApplication>
#include <QLayout>
#include <QSlider>
#include <QLCDNumber>
#include <QLineEdit>
#include <QMessageBox>

//! [0]
class QSimpleAX : public QWidget, public QAxBindable
{
    Q_OBJECT
    Q_CLASSINFO("ClassID",     "{DF16845C-92CD-4AAB-A982-EB9840E74669}")
    Q_CLASSINFO("InterfaceID", "{616F620B-91C5-4410-A74E-6B81C76FFFE0}")
    Q_CLASSINFO("EventsID",    "{E1816BBA-BF5D-4A31-9855-D6BA432055FF}")
    Q_PROPERTY(QString text READ text WRITE setText)
    Q_PROPERTY(int value READ value WRITE setValue)
public:
    explicit QSimpleAX(QWidget *parent = nullptr)
    : QWidget(parent)
    {
        QVBoxLayout *vbox = new QVBoxLayout(this);

        m_slider = new QSlider(Qt::Horizontal, this);
        m_LCD = new QLCDNumber(3, this);
        m_edit = new QLineEdit(this);

        connect(m_slider, &QAbstractSlider::valueChanged, this, &QSimpleAX::setValue);
        connect(m_edit, &QLineEdit::textChanged, this, &QSimpleAX::setText);

        vbox->addWidget(m_slider);
        vbox->addWidget(m_LCD);
        vbox->addWidget(m_edit);
    }

    QString text() const
    {
        return m_edit->text();
    }

    int value() const
    {
        return m_slider->value();
    }

signals:
    void someSignal();
    void valueChanged(int);
    void textChanged(const QString&);

public slots:
    void setText(const QString &string)
    {
        if (!requestPropertyChange("text"))
            return;

        QSignalBlocker blocker(m_edit);
        m_edit->setText(string);
        emit someSignal();
        emit textChanged(string);

        propertyChanged("text");
    }

    void about()
    {
        QMessageBox::information( this, "About QSimpleAX", "This is a Qt widget, and this slot has been\n"
                                                          "called through ActiveX/OLE automation!" );
    }

    void setValue(int i)
    {
        if (!requestPropertyChange("value"))
            return;

        QSignalBlocker blocker(m_slider);
        m_slider->setValue(i);
        m_LCD->display(i);
        emit valueChanged(i);

        propertyChanged("value");
    }

private:
    QSlider *m_slider;
    QLCDNumber *m_LCD;
    QLineEdit *m_edit;
};

//! [0]
#include "main.moc"

//! [1]
QAXFACTORY_BEGIN(
    "{EC08F8FC-2754-47AB-8EFE-56A54057F34E}", // type library ID
    "{A095BA0C-224F-4933-A458-2DD7F6B85D8F}") // application ID
    QAXCLASS(QSimpleAX)
QAXFACTORY_END()
//! [1]