NX二次开发培训源码分享： 通过选择指定特征，修改特征...

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+ e+ o3 k3 ~" d. ?* ^  u" W创建一个选择feature的功能，当用户选择的是sphere的时候，让用户选择更改球的直径！
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4 g  D5 B' P4 K) J  wSession *theSession = Session::GetSession();
        UI         *theUI = UI        ::GetUI();
        Part *workPart (theSession->Parts()->Work());

        // initialize the select
; i( P8 S7 c8 {* t, @7 ^        std::vector <Selection::MaskTriple> masks(1);
        Selection::MaskTriple mask;
        mask.Type=UF_feature_type;
        mask.Subtype =0;
- h: b$ u2 O  z0 `% @! h. g( ^/ {; j        mask.SolidBodySubtype=0;
' F3 y: K! o, @2 I        masks.push_back(mask);
5 e3 D: T8 u. E& t0 E        //masks[0] = {{UF_feature_type,0,0}};
6 M; X( U  D& v* m        TaggedObject *object;
) K7 Z, O$ L6 G+ [+ f2 ~+ q# P! y        std::stringstream ss;
0 k: y- h) ?0 w4 q+ e; u        Point3d cursor;
        Selection::SelectionScope scope =  Selection::SelectionScopeUseDefault;
        Selection::SelectionAction action = Selection::SelectionActionClearAndEnableSpecific;
) G9 @4 X: h; z! x8 w        Selection::Response res;
        Features::Feature * getFeature = NULL;
        res = theUI->SelectionManager()->SelectTaggedObject("select a feature:","feature select",scope,action,false,false,masks,&object,&cursor);
2 P) R( U+ v3 L5 ?: L        if(res == Selection::ResponseObjectSelected || res == Selection::ResponseObjectSelectedByName)
                {
                        // get the information
) {) X" D- p  P& g                         getFeature = dynamic_cast<Features::Feature *>(object);
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: x0 z6 \7 I* O7 X          theSession->ListingWindow()->WriteLine("the select feature type is : " +getFeature->FeatureType() + "\n");

                 if (!strcmp(getFeature->FeatureType().GetUTF8Text(),"SPHERE"))
, L$ }2 c# |" L                 {
- y2 i! v+ y+ c& E- I$ E4 c$ B0 U0 h                         Features::Sphere *getSphere = dynamic_cast<Features::Sphere *>(getFeature);
2 v& v( F  j& W% M/ x, \                         std::vector<Expression *> exp =  getSphere->GetExpressions();
: e, _! p" t$ T8 Q8 A4 |1 g2 ~. u                         ss << exp.size() <<endl;
                         theSession->ListingWindow()->WriteLine("the expression number is : "  + ss.str() );
3 b9 `* Y9 ?$ |1 c8 R                         for(unsigned int i =0 ; i< exp.size();i++)
                         {   
. n3 S" F2 M& T: C- {                                  theSession->ListingWindow()->WriteLine("The expressions are : " + exp[i]->Equation()+"\n");
( B( T7 x( v$ M, X                         }
                         Session::UndoMarkId undomark = theSession->SetUndoMark(Session::MarkVisibilityVisible,"change the exp");
                         exp[0]->SetRightHandSide("400");
- ~1 x" D) l% Z3 X. f                         theSession->UpdateManager()->DoUpdate(undomark);
4 D7 j2 R$ m5 y# ]+ o                         theSession->ListingWindow()->WriteLine("The expressions are : " + exp[0]->Equation()+"\n");
! n1 B6 }9 N/ o9 P: q                 }
3 o& h+ q* J3 h! g, A$ @* h          }
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