Description GtkToolItems are widgets that can appear on a toolbar. To create a toolbar item that contain something else than a button, use gtk_tool_item_new(). Use gtk_container_add() to add a child widget to the tool item. For toolbar items that contain buttons, see the GtkToolButton, GtkToggleToolButton and GtkRadioToolButton classes. See the GtkToolbar class for a description of the toolbar widget, and GtkToolShell for a description of the tool shell interface.