cloud of dots

Hi everybody
It's my first project with QWT, i'm triyng to display a cloud of dots but the problem that only one point is displayed at (0, 0).

Code:

---

#include <qapplication.h>
#include <qwt_plot.h>
#include <qwt_symbol.h>
#include <qwt_plot_curve.h>
 
class Plot : public QwtPlot
{
public:
    Plot();
    ~Plot();
private:
    QwtPlotCurve* Curve;
 
};
 
Plot::Plot():Curve(new QwtPlotCurve("MyCurve"))
{
    double x[5]={25.0, 32.0, 45.0, 68.0, 91.0};
    double y[5]={25.0, 32.0, 45.0, 68.0, 91.0};
 
    this->setAxisScale(xBottom,0.0, 150.0);
    this->setAxisScale(yLeft,0.0, 150.0);
 
 
    this->Curve->setRawSamples(x, y, 5);
    this->Curve->setPen(QPen(Qt::red));
 
    this->Curve->setSymbol(new QwtSymbol(QwtSymbol::XCross, Qt::NoBrush,
                                         QPen(Qt::red), QSize(5, 5)));
 
    this->Curve->setStyle(QwtPlotCurve::NoCurve);
 
 
    this->Curve->attach(this);
 
 
}
 
Plot::~Plot()
{
    delete Curve;
}
 
 
 
int main(int argc, char **argv)
{
    QApplication a(argc, argv);
 
    Plot *p=new Plot();
    p->show();
 
    return a.exec();
}

---

any one can explain me what goes around ?

Best regard

QwtPlotCurve::setRawSamples doesn't copy your arrays and those are from the stack !

Better use QwtPlotCurve::setSamples or allocate your arrays on the heap with new or declare them as static or use a QVector.

Uwe

Great it seems to work !! Thank you Uwe :)