/* Allocate a new ext. data for an object  */
void* lv_obj_allocate_ext_attr(lv_obj_t *obj, uint16_t ext_size)
/* Allocate a new ext. data for an object  */
void* lv_obj_allocate_ext_attr(lv_obj_t *obj, uint16_t ext_size)
{
    obj->ext_attr = lv_mem_realloc(obj->ext_attr, ext_size);
    return (void *)obj->ext_attr;
}