获取部件中所有的表达式，并对表达式进行更改，更新模型

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获取部件中所有的表达式，并对表达式进行更改，更新模型
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结果：

Before change the value :
p0=20
. w+ u! e8 J; ^p1=h
! l7 D3 }9 l1 m" i# t7 Uw=100
+ c; n1 S' J* a$ a( @5 C. rh=20
l=200
3 {  l$ g1 m. _Start to change the expressions :
p0=20
+ R. Z; j* D) N. X' Pp1=h
w=100
h=20
* R' w$ Y5 _2 }, g: F" E) c& J5 el=200
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1. <p>
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2. static void do_UGopen_api(void)
   
3. {
   
4. // create block 1
   
5. double coner[3] = {0,0,0};
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6. char *edges[3] = {"l=100","w=100","h=20"};
   
7. tag_t blk_tag;
   
8. UF_MODL_create_block1(UF_NULLSIGN,coner,edges,&blk_tag);
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9. // create a hole
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10. double dir[3] = {0,0,1};
    & Z; D+ Z; q; ^/ P- I7 {
11. double coner1[3] = {50,50,0};
    # m$ u, f0 o- o' v1 X. v
12. tag_t cyl_tag;
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13. UF_MODL_create_cyl1(UF_NEGATIVE,coner1,"h","20",dir,&cyl_tag);</p><p> // get the expressions
    
14. tag_t part=UF_PART_ask_display_part();
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15. int number_of_exps = 0;
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16. tag_t *exps;
    
17. char *str;
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18. char expStr[133];
    
19. UF_UI_open_listing_window();
    
20. UF_MODL_ask_exps_of_part(part,&number_of_exps,&exps);
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21. UF_UI_write_listing_window("Before change the value : \n");
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22. for(int i = 0 ; i < number_of_exps;i++)
    
23. {
    
24.       
    
25.    UF_MODL_ask_exp_tag_string(exps[i],&str);
    
26.    UF_UI_write_listing_window(str);
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27.    UF_UI_write_listing_window("\n");
    
28.    UF_free(str);
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29. }
    
30. 
    
31. UF_free(exps);
    
32. //Start to change the expressions
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33. UF_UI_write_listing_window("Start to change the expressions : \n");
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34. char *exp_str = "l = 200";
    
35. UF_MODL_edit_exp(exp_str);
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36. UF_MODL_update();
    
37. exp_str = "\0";
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38. //get the new exps
    
39. UF_MODL_ask_exps_of_part(part,&number_of_exps,&exps);
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40. for(int i = 0 ; i < number_of_exps;i++)
    
41. {
    2 L6 M; L0 j. P$ |
42.    UF_MODL_ask_exp_tag_string(exps[i],&str);
    
43.    UF_UI_write_listing_window(str);
    
44.    UF_UI_write_listing_window("\n");
    : e; `$ _. c! O: a" I' x: G! q# M* Z
45.    UF_free(str);
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46. }
    7 j. \5 Y8 \  Q& r, P
47. UF_free(exps);
    7 Y1 u- z, g) ~2 ]  {
48. }</p><p> </p>

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