Determine the size of object without its virtual table pointers

Question

Is there a generic way (not platform dependent) to get at compile time the size of a class object in the memory, without counting the vtable pointers?

Answer 1

As you are asking for a portable way:

class MyClass
{
private:
  struct S 
  {
    DataMemberType1 dataMember1;
    ...
    DataMemberTypeN dataMemberN;
  } m;

public:
  static const size_t MemberSize = sizeof(S);
};