cannot access any QwtPlotCurve instanz

[pospiech]

I always get the following error

1>QCurvePlot.cpp
1>e:\Daten\Dev\SVN\Laserdynamics\QLaserDynamic\inc lude\qwt\qwt_plot_curve.h(214) : error C2248: "QwtPlotItem::QwtPlotItem": Kein Zugriff auf private Member, dessen Deklaration in der QwtPlotItem-Klasse erfolgte.
1> e:\daten\dev\svn\laserdynamics\qlaserdynamic\inclu de\qwt\qwt_plot_item.h(130): Siehe Deklaration von 'QwtPlotItem::QwtPlotItem'
1> e:\daten\dev\svn\laserdynamics\qlaserdynamic\inclu de\qwt\qwt_plot_item.h(31): Siehe Deklaration von 'QwtPlotItem'
1> Diese Diagnose trat in der vom Compiler generierten Funktion "QwtPlotCurve::QwtPlotCurve(const QwtPlotCurve &)" auf.

If I access/create an new curve using:

public:
	vector<QwtPlotCurve> Curve;
 
void QCurvePlot::addCurve()
{
		QwtPlotCurve curve;
		Curve.push_back(curve);
}

public:
	vector<QwtPlotCurve> Curve;

void QCurvePlot::addCurve()
{
		QwtPlotCurve curve;
		Curve.push_back(curve);
}

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[Uwe]

Please don't crosspost.

Uwe

[pospiech]

Since this is a crosspost (I know one should not...) here the answer from the mailinglist of qwt from Rainer Thaden:

Look at the bottom of
http://qwt.sourceforge.net/qwt__plot...8h-source.html
You'll find

private:
// Disabled copy constructor and operator=
QwtPlotItem( const QwtPlotItem & );
QwtPlotItem &operator=( const QwtPlotItem & );



QwtPlotItem is a base class of QwtPlotCurve and doesn't allow to be copied.
Your vector uses copies of the curve. So, you could store pointers of
QwtPlotCurves inside your vector.

vector<QwtPlotCurve*> Curve;

Matthias