Qwt Bode example prints always the curves (and its legend lines) in black

[locke]

Hey guys,

I'm triying to print a QwtPlot and I cannot print its curves in color. I looked at the Bode example, and in the example is the same. You just open the example, go to print and then print it in yout printer (in color) or print in a pdf file with a pdf printer. It is always the same, the curves, amplitude and phase are both black.

There is a bug in the example?, there is a bug in the QwtPlot module? Has anyone else noticed that?

I post here the printing code from the Bode example

#if 1
    QPrinter printer;
#else
    QPrinter printer(QPrinter::HighResolution);
#if QT_VERSION < 0x040000
    printer.setOutputToFile(true);
    printer.setOutputFileName("/tmp/bode.ps");
    printer.setColorMode(QPrinter::Color);
#else
    printer.setOutputFileName("/tmp/bode.pdf");
#endif
#endif
 
    QString docName = d_plot->title().text();
    if ( !docName.isEmpty() )
    {
        docName.replace (QRegExp (QString::fromLatin1 ("\n")), tr (" -- "));
        printer.setDocName (docName);
    }
 
    printer.setCreator("Bode example");
    printer.setOrientation(QPrinter::Landscape);
 
#if QT_VERSION >= 0x040000
    QPrintDialog dialog(&printer);
    if ( dialog.exec() )
    {
#else
    if (printer.setup())
    {
#endif
        QwtPlotPrintFilter filter;
        if ( printer.colorMode() == QPrinter::GrayScale )
        {
            int options = QwtPlotPrintFilter::PrintAll;
            options &= ~QwtPlotPrintFilter::PrintBackground;
            options |= QwtPlotPrintFilter::PrintFrameWithScales;
            filter.setOptions(options);
        }
        d_plot->print(printer, filter);
    }

#if 1
    QPrinter printer;
#else
    QPrinter printer(QPrinter::HighResolution);
#if QT_VERSION < 0x040000
    printer.setOutputToFile(true);
    printer.setOutputFileName("/tmp/bode.ps");
    printer.setColorMode(QPrinter::Color);
#else
    printer.setOutputFileName("/tmp/bode.pdf");
#endif
#endif

    QString docName = d_plot->title().text();
    if ( !docName.isEmpty() )
    {
        docName.replace (QRegExp (QString::fromLatin1 ("\n")), tr (" -- "));
        printer.setDocName (docName);
    }

    printer.setCreator("Bode example");
    printer.setOrientation(QPrinter::Landscape);

#if QT_VERSION >= 0x040000
    QPrintDialog dialog(&printer);
    if ( dialog.exec() )
    {
#else
    if (printer.setup())
    {
#endif
        QwtPlotPrintFilter filter;
        if ( printer.colorMode() == QPrinter::GrayScale )
        {
            int options = QwtPlotPrintFilter::PrintAll;
            options &= ~QwtPlotPrintFilter::PrintBackground;
            options |= QwtPlotPrintFilter::PrintFrameWithScales;
            filter.setOptions(options);
        }
        d_plot->print(printer, filter);
    }

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Thanks!