【求助】函数UF_MODL_ask_sweep_curves的用法

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【求助】函数UF_MODL_ask_sweep_curves的用法目的获取拉伸对象的拉伸曲线调用UF_MODL_ask_sweep_curves函数怎么老出错
: W5 X9 J4 a" S1 d# q3 P; H/////////////////////////////
  拾取对象
2 ~8 y2 V7 S7 U/ d0 q1 f% t  tag_t three_element;
  opts.other_options=0;
  opts.reserved=NULL;
  opts.num_mask_triples=1;
7 U* V5 U0 H3 S. [; P4 V% a6 H( a  opts.mask_triples=&mask;
: }0 C# R. f/ {3 Y  opts.mask_triples->object_type=UF_solid_type;//UF_face_type;
& f: o5 I: p7 b' O* O  opts.mask_triples->object_subtype=UF_solid_body_subtype;//UF_bounded_plane_subtype;
7 c4 b, o6 m7 Q& @; Q$ w7 l; n  opts.mask_triples->solid_type=UF_UI_SEL_FEATURE_BODY;//UF_UI_SEL_FEATURE_ANY_FACE;
  n) @3 k+ c, e# r  opts.scope=UF_UI_SEL_SCOPE_WORK_PART;//UF_UI_SEL_SCOPE_ANY_IN_ASSEMBLY;
  irc=UF_UI_select_single(message,&opts,&response,&three_element,cursor,&view);
& k) |+ c9 [! ^/ Q+ }" L; o$ d  UF_DISP_set_highlight(three_element,0);
8 x& ~8 i* z: u+ W8 I3 L8 I2 X; b  获取对象所属特征tag值
7 s0 @; j1 \; a3 O. D  tag_t three_feature_tag;
  uf_list_t * feature_tag_list;
' v9 i% J0 S. U! F, l& m  irc=UF_MODL_create_list(&feature_tag_list);
  irc=UF_MODL_ask_body_feats(three_element,&feature_tag_list);
8 P( ^2 }% u8 _+ h$ O  tag_t list_item;
  irc=UF_MODL_ask_list_item(feature_tag_list,0,&list_item);
" I+ G* }+ C4 F9 V6 d  获取拉伸曲线
  int pro_number;
( W9 |3 ^$ Y8 e1 h3 z% S  int gui_number;
  tag_t* pro_tag;
  tag_t* gui_tag;
/ A- \9 }! r- r- h; W+ `  irc=UF_MODL_ask_sweep_curves(list_item,&pro_number,&pro_tag,&gui_number,&gui_tag);
  L* g; I; P9 m9 I7 `5 n0 c0 d* C0 d//////////////////////////////////