ax2.h Example File
activeqt/multiple/ax2.h

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 #ifndef AX2_H
 #define AX2_H

 #include <QWidget>
 #include <QPainter>

 class QAxWidget2 : public QWidget
 {
     Q_OBJECT
     Q_CLASSINFO("ClassID", "{58139D56-6BE9-4b17-937D-1B1EDEDD5B71}")
     Q_CLASSINFO("InterfaceID", "{B66280AB-08CC-4dcc-924F-58E6D7975B7D}")
     Q_CLASSINFO("EventsID", "{D72BACBA-03C4-4480-B4BB-DE4FE3AA14A0}")
     Q_CLASSINFO("ToSuperClass", "QAxWidget2")
     Q_CLASSINFO("StockEvents", "yes")
     Q_CLASSINFO("Insertable", "yes")

     Q_PROPERTY( int lineWidth READ lineWidth WRITE setLineWidth )
 public:
     QAxWidget2(QWidget *parent = 0)
         : QWidget(parent), line_width( 1 )
     {
     }

     int lineWidth() const
     {
         return line_width;
     }
     void setLineWidth( int lw )
     {
         line_width = lw;
         repaint();
     }

 protected:
     void paintEvent( QPaintEvent *e )
     {
         QPainter paint( this );
         QPen pen = paint.pen();
         pen.setWidth( line_width );
         paint.setPen( pen );

         QRect r = rect();
         r.adjust( 10, 10, -10, -10 );
         paint.drawEllipse( r );
     }

 private:
     int line_width;
 };

 #endif // AX2_H