cpupiemarker.h

QWT5.01用于Qt开发的二维图形库程序

//-----------------------------------------------------------------
// This class shows how to extend QwtPlotItems. It displays a
// pie chart of user/total/idle cpu usage in percent.
//-----------------------------------------------------------------

#include <qwt_plot_item.h>

class CpuPieMarker: public QwtPlotItem
{
public:
    CpuPieMarker();

    virtual int rtti() const;

    virtual void draw(QPainter *p,
        const QwtScaleMap &, const QwtScaleMap &,
        const QRect &rect) const;
};