It looks great - thanks for sharing link.

X| I have since tried..... typedef a::b NestedBase; IMPLEMENT_DYNCREATE(a, CObject) //from #define RUNTIME_CLASS(class_name) ((CRuntimeClass*)(&class_name::class##class_name)) #define MYRUNTIME_CLASS(class_name) ((CRuntimeClass*)&a::b::b()) // from _IMPLEMENT_RUNTIMECLASS #ifdef _AFXDLL #define MY_IMPLEMENT_RUNTIMECLASS(class_name, base_class_name, wSchema, pfnNew) \ CRuntimeClass* PASCAL class_name::_GetBaseClass() \ { return RUNTIME_CLASS(base_class_name); } \ CRuntimeClass* class_name::GetRuntimeClass() const \ { return MYRUNTIME_CLASS(class_name); } // AFX_COMDAT AFX_DATADEF CRuntimeClass class_name::class##class_name = { \ // #class_name, sizeof(class class_name), wSchema, pfnNew, \ // &class_name::_GetBaseClass, NULL }; #else #define MY_IMPLEMENT_RUNTIMECLASS(class_name, base_class_name, wSchema, pfnNew) \ CRuntimeClass* PASCAL class_name::_GetBaseClass() \ { return RUNTIME_CLASS(base_class_name); } \ CRuntimeClass* class_name::GetRuntimeClass() const \ { return MYRUNTIME_CLASS(class_name); } #endif // from IMPLEMENT_DYNCREATE, just calls MY_IMPLEMENT_RUNTIMECLASS instead #define MYIMPLEMENT_DYNCREATE(class_name, base_class_name) \ CObject* PASCAL class_name::CreateObject() \ { return new class_name; } \ MY_IMPLEMENT_RUNTIMECLASS(class_name, base_class_name, 0xFFFF, \ class_name::CreateObject) MYIMPLEMENT_DYNCREATE(NestedBase, CObject) ... but to no avail, since I cannot get the last bit of my MY_IMPLEMENT_RUNTIMECLASS macro to work (commented out) hELP hELP HeLP HElp. Conrad - conradb@adroit.co.za Always do badly to start off, that way when you get the hang of it suddenly, everyone is surprised.

http://www.attryde.com/clarion/cw_system_dbg.htm[^] We do this sort of thing with our software. "It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt." - Abraham Lincoln Jason Henderson blog | articles

Something like this should work (I don't have a compiler handy, so beware of errors): template <int n> class C;   template <> class C<0> { public: void read_members() { } };   template <int n> class C: public C<n-1> { typedef C<n-1> super; public: int value; void read_members() { value=1; super::read_members(); } }; Joaquín M López Muñoz Telefónica, Investigación y Desarrollo