expected type-specifier before 'QwtLog10ScaleEngine'

[Uwe]

#include <qwt_scale_engine.h>

#include <qwt_scale_engine.h>

To copy to clipboard, switch view to plain text mode 

Uwe

[Bangalaman]

Uwe! I've already included< qwt_scale_engine.h>
I have and I've had the same error

---

Added after 7 minutes:

here is my header
#include "kiss_fft.h"
#include "kiss_fftr.h"

#include <QSharedPointer>
#include <QWidget>
#include <QHBoxLayout>
#include <QVector>
#include <qwt_plot.h>
#include <qwt_plot_curve.h>
#include <qwt_plot_grid.h>
#include <qwt_scale_engine.h>
#include <qwt_plot_marker.h>

[Uwe]

Well - at least in Qwt 6.1 - the name of the class is QwtLogScaleEngine.

Uwe

[Bangalaman]

Thank you for reply and help . it works fine now . my mystake was the Qwt's version , I already use Qwt 6.1 not 6.0.1, I've changed QwtLog10ScaleEngine to QwtLogScaleEngine