RE: delete *this possible?

Hi all,
   i am getting one problem in MFC. i am explaining below -

   i have a Dialog class derive from CDialog

   class A: public CDialog
   {
   public:
    PostNcDestroy()
{
  delete this /// get memory leak
   delete *this //ok
}
   }

 and another C++ class B which contains a object ABC of class A(not a
pointer, i.e it is on stack). In the constructor of B i called the
Create funtion on ABC (i.e its a modeless dialog). In the destructor i
called DestroyWindow() on ABC.

class B
{
private:
   A ABC;
public:
    CStManager()
    {
       ABC.Create(.....)
    }
   ~CStManager()
    {
       ABC.DestroyWindow();
    }

}

Now in the PostNcDestroy() function on class A if i call "delete this"
then i got memory leak, but if i call "delete *this" then ok. Is it
possible to write the statement "delete *this"???