- if (!psppire_data_window_type)
- {
- static const GTypeInfo psppire_data_window_info =
- {
- sizeof (PsppireDataWindowClass),
- NULL,
- NULL,
- (GClassInitFunc)psppire_data_window_class_init,
- (GClassFinalizeFunc) NULL,
- NULL,
- sizeof (PsppireDataWindow),
- 0,
- (GInstanceInitFunc) psppire_data_window_init,
- };
-
- static const GInterfaceInfo window_interface_info =
- {
- (GInterfaceInitFunc) psppire_data_window_iface_init,
- NULL,
- NULL
- };
-
- psppire_data_window_type =
- g_type_register_static (PSPPIRE_TYPE_WINDOW, "PsppireDataWindow",
- &psppire_data_window_info, 0);
-
-
- g_type_add_interface_static (psppire_data_window_type,
- PSPPIRE_TYPE_WINDOW_MODEL,
- &window_interface_info);
- }
-
- return psppire_data_window_type;
-}
+G_DEFINE_TYPE_WITH_CODE (PsppireDataWindow, psppire_data_window, PSPPIRE_TYPE_WINDOW,
+ G_IMPLEMENT_INTERFACE (PSPPIRE_TYPE_WINDOW_MODEL,
+ psppire_data_window_iface_init))