@type: A #GType value.
-<!-- ##### ENUM GTypeFundamentals ##### -->
-<para>
-The predefined identifiers of the reserved fundamental types.
-</para>
-
-@G_TYPE_INVALID: Usually a return value indicating an error.
-@G_TYPE_NONE: A synonym for the "void" type in C.
-@G_TYPE_INTERFACE: Root type of all interface types.
-@G_TYPE_CHAR: Identifier for the built-in type "gchar".
-@G_TYPE_UCHAR: Identifier for the built-in type "guchar".
-@G_TYPE_BOOLEAN: Identifier for the built-in type "gboolean".
-@G_TYPE_INT: Identifier for the built-in type "gint".
-@G_TYPE_UINT: Identifier for the built-in type "guint".
-@G_TYPE_LONG: Identifier for the built-in type "glong".
-@G_TYPE_ULONG: Identifier for the built-in type "gulong".
-@G_TYPE_INT64:
-@G_TYPE_UINT64:
-@G_TYPE_ENUM: Identifier for the "#GEnum" type.
-@G_TYPE_FLAGS: Identifier for the "#GFlags" type.
-@G_TYPE_FLOAT: Identifier for the built-in type "gfloat".
-@G_TYPE_DOUBLE: Identifier for the built-in type "gdouble".
-@G_TYPE_STRING: Identifier for a pointer to a null-terminated string "gchar*".
-@G_TYPE_POINTER: Identifier for anonymous pointers "void*".
-@G_TYPE_BOXED: Identifier for the "#GBoxed" type.
-@G_TYPE_PARAM: Identifier for the "#GParam" type.
-@G_TYPE_OBJECT: Identifier for the "#GObject" type.
-@G_TYPE_RESERVED_BSE_FIRST: First fundamental type ID reserved for BSE.
-@G_TYPE_RESERVED_BSE_LAST: Last fundamental type ID reserved for BSE.
-@G_TYPE_RESERVED_LAST_FUNDAMENTAL:
-@G_TYPE_CONSTANT_TYPES:
-@G_TYPE_CLOSURE:
-@G_TYPE_VALUE:
-@G_TYPE_VALUE_ARRAY:
-@G_TYPE_GSTRING:
-@G_TYPE_PARAM_CHAR:
-@G_TYPE_PARAM_UCHAR:
-@G_TYPE_PARAM_BOOLEAN:
-@G_TYPE_PARAM_INT:
-@G_TYPE_PARAM_UINT:
-@G_TYPE_PARAM_LONG:
-@G_TYPE_PARAM_ULONG:
-@G_TYPE_PARAM_INT64:
-@G_TYPE_PARAM_UINT64:
-@G_TYPE_PARAM_UNICHAR:
-@G_TYPE_PARAM_ENUM:
-@G_TYPE_PARAM_FLAGS:
-@G_TYPE_PARAM_FLOAT:
-@G_TYPE_PARAM_DOUBLE:
-@G_TYPE_PARAM_STRING:
-@G_TYPE_PARAM_PARAM:
-@G_TYPE_PARAM_BOXED:
-@G_TYPE_PARAM_POINTER:
-@G_TYPE_PARAM_VALUE_ARRAY:
-@G_TYPE_PARAM_CLOSURE:
-@G_TYPE_PARAM_OBJECT:
-
<!-- ##### STRUCT GTypeInterface ##### -->
<para>
An opaque structure used as the base of all interface types.