QT5 -- Add Qwt 6.1-multiaxes

qwt/examples/spectrogram/plot.h

@@ -0,0 +1,22 @@
+#include <qwt_plot.h>
+#include <qwt_plot_spectrogram.h>
+
+class Plot: public QwtPlot
+{
+    Q_OBJECT
+
+public:
+    Plot( QWidget * = NULL );
+
+public Q_SLOTS:
+    void showContour( bool on );
+    void showSpectrogram( bool on );
+    void setAlpha( int );
+
+#ifndef QT_NO_PRINTER
+    void printPlot();
+#endif
+
+private:
+    QwtPlotSpectrogram *d_spectrogram;
+};