Retrieves any font rendering options previously set with
pango_cairo_font_map_set_font_options(). This function does not report options
that are derived from the target surface by pango_cairo_update_context()
Since 1.10
the font options previously set on the context, or NULL if no options have been set. This value is owned by the context and must not be modified or freed.
Retrieves any font rendering options previously set with pango_cairo_font_map_set_font_options(). This function does not report options that are derived from the target surface by pango_cairo_update_context() Since 1.10