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：

' N3 d0 q# E( C/ _+ d& R4 z  f' EBefore change the value :
, g, N: J5 v  N7 @$ Zp0=20
6 C( W- k  f7 F; rp1=h
) c  X5 P: E1 {; mw=100
h=20
/ t$ D$ g! @# }4 m- J( N& Cl=200
Start to change the expressions :
, @3 `' U9 ]( S; k% j& }+ ~" n& }+ l- Ap0=20
p1=h
: g7 F- c7 `+ ?; R' pw=100
h=20
l=200
/ L  j  A. T3 I$ o
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1. <p>
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2. static void do_UGopen_api(void)
   
3. {
   
4. // create block 1
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5. double coner[3] = {0,0,0};
   
6. char *edges[3] = {"l=100","w=100","h=20"};
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7. tag_t blk_tag;
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8. UF_MODL_create_block1(UF_NULLSIGN,coner,edges,&blk_tag);
   
9. // create a hole
   
10. double dir[3] = {0,0,1};
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11. double coner1[3] = {50,50,0};
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12. tag_t cyl_tag;
    
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();
    
15. int number_of_exps = 0;
    
16. tag_t *exps;
    
17. char *str;
    
18. char expStr[133];
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19. UF_UI_open_listing_window();
    
20. UF_MODL_ask_exps_of_part(part,&number_of_exps,&exps);
    
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++)
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23. {
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24.       
    
25.    UF_MODL_ask_exp_tag_string(exps[i],&str);
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26.    UF_UI_write_listing_window(str);
    
27.    UF_UI_write_listing_window("\n");
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28.    UF_free(str);
    
29. }
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30. 
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31. UF_free(exps);
    
32. //Start to change the expressions
    
33. UF_UI_write_listing_window("Start to change the expressions : \n");
    
34. char *exp_str = "l = 200";
    
35. UF_MODL_edit_exp(exp_str);
    
36. UF_MODL_update();
    
37. exp_str = "\0";
    
38. //get the new exps
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39. UF_MODL_ask_exps_of_part(part,&number_of_exps,&exps);
    
40. for(int i = 0 ; i < number_of_exps;i++)
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41. {
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42.    UF_MODL_ask_exp_tag_string(exps[i],&str);
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43.    UF_UI_write_listing_window(str);
    
44.    UF_UI_write_listing_window("\n");
    
45.    UF_free(str);
    
46. }
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47. UF_free(exps);
    
48. }</p><p> </p>

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