GBoxed A mechanism to wrap opaque C structures registered by the type system GBoxed is a generic wrapper mechanism for arbitrary C structures. The only thing the type system needs to know about the structures is how to copy and free them, beyond that they are treated as opaque chunks of memory. Boxed types are useful for simple value-holder structures like rectangles or points. They can also be used for wrapping structures defined in non-GObject based libraries. #GParamSpecBoxed, g_param_spec_boxed() This function is provided by the user and should produce a copy of the passed in boxed structure. @boxed: The boxed structure to be copied. @Returns: The newly created copy of the boxed structure. This function is provided by the user and should free the boxed structure passed. @boxed: The boxed structure to be freed. Provide a copy of a boxed structure @src_boxed which is of type @boxed_type. @boxed_type: The type of @src_boxed. @src_boxed: The boxed structure to be copied. @Returns: The newly created copy of the boxed structure. Free the boxed structure @boxed which is of type @boxed_type. @boxed_type: The type of @boxed. @boxed: The boxed structure to be freed. This function creates a new %G_TYPE_BOXED derived type id for a new boxed type with name @name. Boxed type handling functions have to be provided to copy and free opaque boxed structures of this type. @name: Name of the new boxed type. @boxed_copy: Boxed structure copy function. @boxed_free: Boxed structure free function. @Returns: New %G_TYPE_BOXED derived type id for @name. Creates a new %G_TYPE_POINTER derived type id for a new pointer type with name @name. @name: the name of the new pointer type. @Returns: a new %G_TYPE_POINTER derived type id for @name. The #GType for #GDate. The #GType for #GString. The #GType for a boxed type holding a %NULL-terminated array of strings. The code fragments in the following example show the use of a property of type #G_TYPE_STRV with g_object_class_install_property(), g_object_set() and g_object_get(). g_object_class_install_property (object_class, PROP_AUTHORS, g_param_spec_boxed ("authors", _("Authors"), _("List of authors"), G_TYPE_STRV, G_PARAM_READWRITE)); gchar *authors[] = { "Owen", "Tim", NULL }; g_object_set (obj, "authors", authors, NULL); gchar *writers[]; g_object_get (obj, "authors", &writers, NULL); /* do something with writers */ g_strfreev (writers); @Since: 2.4 A C representable type name for #G_TYPE_STRV.