I posted article 7598 to this forum in the hope some specialist out there
could come up with the mother of all solutions to my problem. The problem
was that I found it extremely difficult to implement code which would
invoke a method on an abitrary object (i.e. all I have is a void* to an
object who's class is not known and the address of one of the objects NON-
static member-functions).
Since I got no perfect solution to my problem, I would like you C++ experts
to comment on the following C++ language extension: Implement a keyword
that can be used to reference any C++ class (I used CPPCLASS as the key-
word in the following sample code):

   #include <iostream.h>

   class A {
      void cb  ()  { cout << "A::cb()" << endl; }
   }

   class B   {
      CPPCLASS * px; // px is a pointer to an object who's class is unknown
      void (CPPCLASS::*pfnx)(void); // pfnx is one of px's memberfuncs
      B(CPPCLASS * p, void (CPPCLASS::*pfn)(void)) : px(p), pfnx(pfn) {};
      void Notify () { px->(*pfnx)(); };
   }

   int main () {
      A a;
      B b(&a, &A::cbh);
      b.Notify();  // should invoke a.cb()
      return 0;
   }

Cheers
--
Peter Hug             |                               |  Lieber
Maxi Solutions Ltd    |   Voice: (+64) 4 298 3441     |  arm dran
Paraparaumu Beach     |   Fax:   (+64) 4 297 2288     |  als
New Zealand           |   email: hugp@actrix.gen.nz   |  arm ab