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C++ QML Integration Demo App

 #ifndef MYQMLTYPE_H
 #define MYQMLTYPE_H

 #include <QObject>

 class MyQMLType : public QObject
 {
   Q_OBJECT
   Q_PROPERTY(QString message READ message WRITE setMessage NOTIFY messageChanged) // this makes message available as a QML property

 public:
   MyQMLType();

 public slots: // slots are public methods available in QML
   int increment(int value);
   void startCppTask(); // starts internal calculations of doCppTask()

 signals:
   void messageChanged();
   void cppTaskFinished(); // triggered after calculations in doCppTask()

 public:
   QString message() const;
   void setMessage(const QString& value);

 private:
   void doCppTask(); // method for internal calculations
   QString m_message;