gtkmm: New API in gtkmm 2.2

gtkmm 4.8.0

New API in gtkmm 2.2

Member Gdk::Pixbuf::set_option (const Glib::ustring & key, const Glib::ustring & value)
Member Gdk::PixbufFormat::get_description () const
Member Gdk::PixbufFormat::get_extensions () const
Member Gdk::PixbufFormat::get_mime_types () const
Member Gdk::PixbufFormat::get_name () const
Member Gdk::PixbufFormat::is_writable () const
Member Gdk::PixbufLoader::get_format () const
Member Gdk::PixbufLoader::set_size (int width, int height)