desired #cairo_font_type_t
the newly allocated PangoFontMap of suitable type which should be freed with g_object_unref(), or %NULL if the requested cairo font backend is not supported / compiled in.
ConstructionException GTK+ fails to create the object.
1.18
Creates a new PangoCairoFontMap object of the type suitable to be used with cairo font backend of type @fonttype.
In most cases one should simply use [type_func@PangoCairo.FontMap.new], or in fact in most of those cases, just use [func@PangoCairo.FontMap.get_default].