c# - Best way to write C ++/CLI nested object accessors -

here situation:

i have unmanaged library written in c/c++ , access functions , structures in clr, having trouble writing basic accessors nested objects. here example of how these structs laid out in libraries:

struct myobjectunmanaged {     surfaceunmanaged s;     ... }  struct surfaceunmanaged {    int numpoints;    double *gridz;    .... } 

myobjectunmanaged has multiple structures nested within, , structs surfaceunmanaged have nested objects. user needs able allocate memory these structures.

in unmanaged library, user creates instance of myobjectunmanaged , modifies each of necessary members hand. user accesses members of nested objects , sets values well. finally, pointer instance of myobjectunmanaged passed static function again modified.

here managed wrapper myobjectunmanaged

public ref class myobjectwrappermanaged   {     private:     myobjectunmanaged *o      public:     myobjectwrappermanaged(){ o  = new myobjectunmanaged();}  // how should write accessors,properties // or functions modify objects nested within o?     void setnumpointsforsurface(int numpts); // accessors seem inefficient ,                                              // gratiutous if there                                              // lot of members access , modify  } 

should creating managed wrappers surfaceunmanaged? if so, public members of myobjectwrappermanaged or properties , accessors return new instances of hypothetical surfacemanaged class? best way client access surfaceunmanaged allocate memory top level?