求助UF_ROUTE_ask_characteristics的用法

last_pupu

UF_ROUTE_ask_characteristics试了很久都用不起来
  UF_UI_open_listing_window();
, y: h6 H: {+ c2 Q( K UF_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);
* [5 {8 V" i- L  `& O: ]   UF_get_fail_message(fail_code,message);
/ c9 k/ G9 n8 g" g9 P: W& w    uc1601(message,1);
+ u; h( n; c/ A   length=fcvt(charx_count,0,&nDec,&nSign);
, |* a; c9 w9 \- H0 r   fail_code=UF_UI_write_listing_window(length);
" f5 h& j1 S7 u* M4 j5 `6 h   UF_get_fail_message(fail_code,message);
    uc1601(message,1);
    UF_UI_write_listing_window("\n");
   UF_ROUTE_free_charx_array(charx_count,list);
}
除了空白窗口之外什么都没有显示，请大家指教