ax2.h Example File
^{activeqt/multiple/ax2.h}

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    **
    ** Copyright (C) 1992-2005 Trolltech AS. All rights reserved.
    **
    ** This file is part of the documentation of the Qt Toolkit.
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** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
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    #include <qwidget.h>
    #include <qpainter.h>

    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_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;
    };