331 lv_obj_t * lv_obj_get_child(const lv_obj_t * obj, int32_t idx)  in lv_obj_get_child()  argument
338     if(idx < 0) {  in lv_obj_get_child()
339         idx = obj->spec_attr->child_cnt + idx;  in lv_obj_get_child()
340         if(idx < 0) return NULL;  in lv_obj_get_child()
341         idu = (uint32_t) idx;  in lv_obj_get_child()
344         idu = idx;  in lv_obj_get_child()
348     else return obj->spec_attr->children[idx];  in lv_obj_get_child()
351 lv_obj_t * lv_obj_get_child_by_type(const lv_obj_t * obj, int32_t idx, const lv_obj_class_t * class…  in lv_obj_get_child_by_type()  argument
359     if(idx >= 0) {  in lv_obj_get_child_by_type()
362                 if(idx == 0) return obj->spec_attr->children[i];  in lv_obj_get_child_by_type()
363                 else idx--;  in lv_obj_get_child_by_type()
368         idx++;   /*-1 means the first child*/  in lv_obj_get_child_by_type()
371                 if(idx == 0) return obj->spec_attr->children[i];  in lv_obj_get_child_by_type()
372                 else idx++;  in lv_obj_get_child_by_type()
379 lv_obj_t * lv_obj_get_sibling(const lv_obj_t * obj, int32_t idx)  in lv_obj_get_sibling()  argument
382     int32_t sibling_idx = (int32_t)lv_obj_get_index(obj) + idx;  in lv_obj_get_sibling()
388 lv_obj_t * lv_obj_get_sibling_by_type(const lv_obj_t * obj, int32_t idx, const lv_obj_class_t * cla…  in lv_obj_get_sibling_by_type()  argument
393     int32_t sibling_idx = (int32_t)lv_obj_get_index_by_type(obj, class_p) + idx;  in lv_obj_get_sibling_by_type()
444     uint32_t idx = 0;  in lv_obj_get_index_by_type()  local
448             if(child == obj) return idx;  in lv_obj_get_index_by_type()
449             idx++;  in lv_obj_get_index_by_type()