Intermediate types
| Chapter 3. Basics |

## Intermediate types

Some parts of the `gtkmm` API use intermediate data containers, such as `Glib::StringArrayHandle` instead of a specific Standard C++ container such as `std::vector` or `std::list`. You should not declare these types yourself -- you should use whatever Standard C++ container you prefer instead. gtkmm will do the conversion for you. Here are some of these intermediate types:

- Glib::StringArrayHandle or Glib::ArrayHandle<Glib::ustring>: Use std::vector<Glib::ustring>, std::list<Glib::ustring>, const char*[], etc.

- Glib::ListHandle<Gtk::Widget*>: Use std::vector<Gtk::Widget*>, std::list<Gtk::Widget*>, etc.

- Glib::SListHandle<Gtk::Widget*>: Use std::vector<Gtk::Widget*>, std::list<Gtk::Widget*>, etc.

Glib::ustring |  | Hello World in gtkmm