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 @pango_cairo_font_map_new(), or in fact in most of those cases, just use @pango_cairo_font_map_get_default().