[Swig-user] throw new MethodAccessException("C++ destructor does not have public access");

[Mathieu M. <mat...@gm...>]

'lo,

  [Sorry for the empty email earlier in the day]

  I am trying to wrap a C++ object which use the following pattern
(factory design pattern if I am not mistaken). It goes like this:

struct Foo
{
  static Foo* New() { return new Foo; }
  virtual void Delete(); // call reference counting mechanism
protected:
  Foo();
  ~Foo();
};


So in order to get the reference counting mechanism to work properly I
need to call Foo::New() in the cstor and Foo::Delete in the destrutor.

for the cstor this was easy:

%extend Foo {
%typemap(cscode) Foo
%{
  public Foo() : this(vtkgdcmswigPINVOKE.Foo_New(), true) {}
%}
};

But I do not understand what I need to do to get 'Dispose' to call
Delete on the C++ object. Right now I have:

  public virtual void Dispose() {
    lock(this) {
      if(swigCPtr.Handle != IntPtr.Zero && swigCMemOwn) {
        swigCMemOwn = false;
        throw new MethodAccessException("C++ destructor does not have
public access");
      }
      swigCPtr = new HandleRef(null, IntPtr.Zero);
      GC.SuppressFinalize(this);
    }
  }

Thanks for suggestion,
-- 
Mathieu