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();
  b0 s! N7 Z' h* G7 a 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);
  r" l; M  A/ s% E! @; B   UF_get_fail_message(fail_code,message);
    uc1601(message,1);
   length=fcvt(charx_count,0,&nDec,&nSign);
/ H. z7 B( ?0 M4 ?+ f. V   fail_code=UF_UI_write_listing_window(length);
   UF_get_fail_message(fail_code,message);
, n# ?" n3 [% F$ I    uc1601(message,1);
% \3 Y  ^4 Y$ g$ s* M    UF_UI_write_listing_window("\n");
  e5 i2 P8 d0 s   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