lv_check_obj.h

#define LV_CHECK_OBJ_CLASS(obj, cls, action) \
    LV_CHECK_ARG(obj != NULL, action);

#define LV_CHECK_OBJ_VALID(obj, cls, action) \
    LV_CHECK_OBJ_CLASS(obj, cls, action);

#define LV_CHECK_OBJ(obj, cls, action) \
    LV_CHECK_OBJ_VALID(obj, cls, action)