//The list contains the virtual memory address of the functions Add, Sub, GetLastUsedFunc and the constructor.

//Since we obtained the block of memory, we have to call the constructor to initialize the block of memory.
//So, we get the relative virtual address of the constructor in the DLL.

//Since we have the address of the constructor, we have to explicitly call it to initialize the
//block of memory obtained by malloc.

//Yes, but how do we associate an object for the constructor?

//If you remember, when any member function is called, including the constructor,
//the address of the object gets quietly passed to the called function and this address is stored in the stack.
//On an Intel based machine, this address of the object is pushed onto the stack via the ECX register.
//So, if you create a class and call its member function, the ECX register contains the 'this' pointer.
//This screen shot should make things clearer.

//acerca del bloque reservado con malloc..
//since we already have the address of a block of memory (that will in the future be an object),
//we move this address into the ECX register by using the Visual C++ inline assembler syntax:
//__asm { MOV ECX, pCCalc }

//Since we have already obtained the address of the constructor, we just say:
//pCtor ();

//When your function pointer pCtor() returns from the DLL,
//it would have initialized the object of the class contained in the DLL.

EXPORT void FuncionQueUsaUnParametroDeClaseDatos( Datos &dat )
{
      /* modifica el objeto, lo inicializa y le asigna valores a sus miembros (propiedades) */

     dat.setValorA(5);//ejemplo
}