#define GUPPI_GROUP_STATE0 (obj) #define GUPPI_IS_GROUP_STATE0 (obj) GuppiElementState* guppi_group_state_new (void);
GtkObject +----GuppiElementState +----GuppiGroupState
#define GUPPI_GROUP_STATE0(obj) ((obj) ? (GUPPI_GROUP_STATE(obj)) : NULL)
#define GUPPI_IS_GROUP_STATE0(obj) (((obj) == NULL) || (GUPPI_IS_GROUP_STATE(obj)))
GuppiElementState* guppi_group_state_new (void);