GTK folks: do you know of a way (or "the right way") to know if my app/a widget is actually *using* the font specified? For example, if my CSS says to use font "Foo," but that font isn't installed? I poked a little bit at PangoFontDescription but it looks like it will return the requested font description for the context and not actually what's being used. #GTK #GNOME #Pango #Vala #Linux