求助UF_ROUTE_ask_characteristics的用法

last_pupu

UF_ROUTE_ask_characteristics试了很久都用不起来
; k* o$ ?" }& u3 g9 `% Q6 w  UF_UI_open_listing_window();
& T8 J0 S: `! tUF_ROUTE_ask_part_segs(part,&num_part_segs,&part_segs);
for (i=0;i<num_part_segs;i++)
{
   fail_code=UF_ROUTE_ask_characteristics(part_segs[i],UF_ROUTE_CHARX_TYPE_ANY,&charx_count,&list);
1 |; U0 i1 j) d6 N" M+ `4 h   UF_get_fail_message(fail_code,message);
    uc1601(message,1);
$ e) u$ ?1 \  w0 Z% @   length=fcvt(charx_count,0,&nDec,&nSign);
   fail_code=UF_UI_write_listing_window(length);
# J( S" ~/ Z0 {. n( V. s. y/ _   UF_get_fail_message(fail_code,message);
- o! H- b8 v) p4 x/ @: E    uc1601(message,1);
" C7 Q3 V3 k: g7 b* p% L/ m) `# n    UF_UI_write_listing_window("\n");
4 d! b4 ~/ n6 u- Y% V" p7 g1 ]   UF_ROUTE_free_charx_array(charx_count,list);
}
没有出错，但是最终除了空白窗口之外什么都没有显示，请大家指教