新增qwt源码版本

qwtdemo/examples/legends/plot.h

@@ -0,0 +1,32 @@
+#ifndef _PLOT_H_
+#define _PLOT_H_
+
+#include <qwt_plot.h>
+
+class Settings;
+class LegendItem;
+class QwtLegend;
+
+class Plot: public QwtPlot
+{
+    Q_OBJECT
+
+public:
+    Plot( QWidget *parent = NULL );
+    virtual ~Plot();
+
+public Q_SLOTS:
+    void applySettings( const Settings & );
+
+public:
+    virtual void replot();
+
+private:
+    void insertCurve();
+
+    QwtLegend *d_externalLegend;
+    LegendItem *d_legendItem;
+    bool d_isDirty;
+};
+
+#endif