1 #include <qwt_plot.h> 2 #include <qdatetime.h> 3 4 class Curve; 5 6 class Plot: public QwtPlot 7 { 8 public: 9 Plot( QWidget * = NULL); 10 11 protected: 12 virtual void timerEvent( QTimerEvent * ); 13 14 private: 15 void updateCurves(); 16 17 enum { CurveCount = 4 }; 18 Curve *d_curves[CurveCount]; 19 20 QTime d_time; 21 }; 22