Does QFont::setStyleName work at all?

stephenju

I tried to set the style name of fonts and none of the seem to work on Windows. Here's the code:

    QFontDatabase fdb;
    auto fonts = fdb.families();
    for(auto f:fonts) {
        auto styles = fdb.styles(f);
        for(auto s:styles) {
            QFont font(f);
            font.setStyleName(s);
            font.setPixelSize(13);
            auto label = new QLabel(QString::fromLatin1("%1: %2").arg(f).arg(s));
            label->setFont(font);
            layout->addWidget(label);
        }
    }

And all the fonts with the same family render the same regardless of style name set. Is this a know issue?

mrjj

hi
For the read method it says

"depends on system font support, thus only works for OS X and X11 so far. On Windows irregular styles will be added as separate font families so there is no need for this."

http://doc.qt.io/qt-5.5/qfont.html#styleName

So maybe it has no effect on Windows?

stephenju

@mrjj But the sample code fontsampler does set style name and works.

mrjj

@stephenju said:

fontsampler

ok that is good news then.
Can work.

Have you checked your values again the values used in
QFont font(family, size, weight, italic); ?
in the sample.

stephenju

@mrjj I check and tried to replicate what the sample does but still doesn't work. I do notice the sample code uses the font in QTextDocument. Not sure if it matters.

Also, from the documentation, weight and italic shouldn't matter once you set the style name
http://doc.qt.io/qt-5/qfont.html#setStyleName

However, I got it to work by using QFontDatabase::font() which takes the style name.