Print PDF under Windows

[giusepped]

I would like to understand better the printing engine.
I would print a PDF under Windows: is it possible?

void MyPlot::printOut()
{
	 QPrinter printer(QPrinter::HighResolution);
 
	 printer.setOutputFileName(tr("diagrammasolare.pdf"));
 
         printer.setOutputFormat(QPrinter::PdfFormat);
         printer.setCreator("Solar Calc");
         printer.setOrientation(QPrinter::Landscape);
 
        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.setOutputFormat(QPrinter::PdfFormat);
         printer.setCreator("Solar Calc");
         printer.setOrientation(QPrinter::Landscape);
	 
        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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With this code, which is good under windows, I cannot get printing the pdf under windows.
No dialog shows up and the message
only native format supported is shown.

So, is it possible to print pdf under Windows?
G