gistfile1.txt

// TEST OBJECT CLASS
class TestObject : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString testText READ testText WRITE setTestText)
public:
    TestObject(QObject *parent = 0) 
      : m_testText("testing") {}
    ~TestObject() {}

    QString testText() const { return m_testText; }
    void setTestText(const QString &text) { m_testText = text; }

private:
  QString m_testText;
}

// TEST.QML FILE
Rectangle {
  // bindings
  Binding { target: testobject; property: "testText"; value: field.text }
  
  TextField {
    id: field
  }
}


// MAIN CPP
int main(int argc, char ** argv)
{
    QApplication app(argc, argv);
    TestObject testObject;
    QDeclarativeView view;
    view.rootContext()->setContextProperty("testobject", &testObject);
    QDeclarativeComponent component(view.engine(), QUrl::fromLocalFile("Test.qml"));
    QObject *testInstance = component.create();
    view.show();
    return app.exec();
}