Oops. Found quite a few issues with the Zero UI. The builds that I posted on my site on July 8th have a few known issues. Nobody has complained yet, though.

Anyway, here's a piece of code that I wrote in the process of fixing things.

/**
 * Pick the first available monospace font in a widget's
 * Pango context
 */
bool
get_monospace_font(Pango::FontDescription& font, Gtk::Widget& w)
{
    bool success = false;

    if (Glib::RefPtr<Pango::Context> ctxt = w.get_pango_context())
    {
        Glib::ArrayHandle<Glib::RefPtr<Pango::FontFamily> > ff =
           ctxt->list_families();

        Glib::ArrayHandle<Glib::RefPtr<
            Pango::FontFamily> >::const_iterator
                i = ff.begin(), end = ff.end();

        for (; i != end; ++i)
        {
            if ((*i)->is_monospace())
            {
                font = Pango::FontDescription((*i)->get_name());

                w.ensure_style();
                if (Glib::RefPtr <Gtk::Style> style = w.get_style())
                {
                    font.merge(style->get_font(), false);
                }
                if (Glib::RefPtr<Pango::Font> f = ctxt->load_font(font))
                {
                    font = f->describe();
                }
                success = true;
                break;
            }
        }
    }
    return success;
}

Note to self: write a sed script for "fixing" templates and pointers in code snippets posted on this blog.

Second note to self: make a custom T-shirt on Zazzle, printed with said sed script.