Glib之gobject中G_DEFINE_TYPE定义

#define G_DEFINE_TYPE(TN, t_n, T_P) G_DEFINE_TYPE_EXTENDED (TN, t_n, T_P, 0, {})
 
#define G_DEFINE_TYPE_EXTENDED(TN, t_n, T_P, _f_, _C_)      _G_DEFINE_TYPE_EXTENDED_BEGIN (TN, t_n, T_P, _f_) {_C_;} _G_DEFINE_TYPE_EXTENDED_END()
 
#define _G_DEFINE_TYPE_EXTENDED_BEGIN(TypeName, type_name, TYPE_PARENT, flags) \
\
static void     type_name##_init              (TypeName        *self); \
static void     type_name##_class_init        (TypeName##Class *klass); \
static gpointer type_name##_parent_class = NULL; \
static void     type_name##_class_intern_init (gpointer klass) \
{ \
  type_name##_parent_class = g_type_class_peek_parent (klass); \
  type_name##_class_init ((TypeName##Class*) klass); \
} \
\
gulong\
type_name##_get_type (void) \
{ \
  static volatile gsize g_define_type_id__volatile = 0; \
  if (g_once_init_enter (&g_define_type_id__volatile))  \
    { \
      gulongg_define_type_id = \
        g_type_register_static_simple (TYPE_PARENT, \
                                       g_intern_static_string (#TypeName), \
                                       sizeof (TypeName##Class), \
                                       (GClassInitFunc) type_name##_class_intern_init, \
                                       sizeof (TypeName), \
                                       (GInstanceInitFunc) type_name##_init, \
                                       (GTypeFlags) flags); \
      { /* custom code follows */
	      #define _G_DEFINE_TYPE_EXTENDED_END()   \
        /* following custom code */ \
      }                 \
      g_once_init_leave (&g_define_type_id__volatile, g_define_type_id); \
    }                   \
  return g_define_type_id__volatile;    \
} /* closes type_name##_get_type() */

来源：oschina

链接：https://my.oschina.net/u/4350255/blog/4310514