Qwt and context menu

[giusepped]

I am trying to make a context menu, whenever the user right click on my plot.

MyPlot::MyPlot( QWidget* parent) : QwtPlot(parent)
 
{
 
	this->setContextMenuPolicy(Qt::CustomContextMenu);
	connect(this,SIGNAL(customContextMenuRequested(const QPoint &  )),this,SLOT(popUpMenu(const QPoint &)));

MyPlot::MyPlot( QWidget* parent) : QwtPlot(parent)
	
{
  
	this->setContextMenuPolicy(Qt::CustomContextMenu);
	connect(this,SIGNAL(customContextMenuRequested(const QPoint &  )),this,SLOT(popUpMenu(const QPoint &)));

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and for sure

void MyPlot::popUpMenu(const QPoint &pos)
{ 
	qDebug()<<"meu aperto?"<<pos;
 	QMenu menu;
	menu.addAction(a_print);
	menu.popup(pos);
}

void MyPlot::popUpMenu(const QPoint &pos)
{ 
	qDebug()<<"meu aperto?"<<pos;
 	QMenu menu;
	menu.addAction(a_print);
	menu.popup(pos);
}

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But nothing appear.
I forgot something?

[giusepped]

It seems that if I put

menu.exec(QCursor::pos());

menu.exec(QCursor::pos());

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the menu shows up:
But now, I wanna print the qwt plot.
With the following code I can print, but the axis will not be present in the output although it is present in the plot.
Help.

void MyPlot::printOut()
{
	 QPrinter printer(QPrinter::HighResolution);
	 printer.setOutputFileName(tr("diagrammasolare.pdf"));
	 printer.setCreator("Solar Calc");
         printer.setOrientation(QPrinter::Landscape);
	 printer.setOrientation(QPrinter::Portrait);
	 QPrintDialog dialog(&printer);
    if ( dialog.exec() )
    {	
	QwtPlotPrintFilter filter;
        if ( printer.colorMode() == QPrinter::GrayScale )
        {
            int options = QwtPlotPrintFilter::PrintAll;
            options &= ~QwtPlotPrintFilter::PrintBackground;
            options |= QwtPlotPrintFilter::PrintFrameWithScales;
            filter.setOptions(options);
        }
 
	print(printer, filter);
 
 
 
   }
}

void MyPlot::printOut()
{
	 QPrinter printer(QPrinter::HighResolution);
	 printer.setOutputFileName(tr("diagrammasolare.pdf"));
	 printer.setCreator("Solar Calc");
         printer.setOrientation(QPrinter::Landscape);
	 printer.setOrientation(QPrinter::Portrait);
	 QPrintDialog dialog(&printer);
    if ( dialog.exec() )
    {	
	QwtPlotPrintFilter filter;
        if ( printer.colorMode() == QPrinter::GrayScale )
        {
            int options = QwtPlotPrintFilter::PrintAll;
            options &= ~QwtPlotPrintFilter::PrintBackground;
            options |= QwtPlotPrintFilter::PrintFrameWithScales;
            filter.setOptions(options);
        }

	print(printer, filter);



   }
}

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