Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

type
   PFieldClassTable = ^TFieldClassTable;
   TFieldClassTable = packed record
     Count: Smallint;
     Classes: array[0..8191] of ^TPersistentClass;
   end;

 function GetFieldClassTable(AClass: TClass): PFieldClassTable; assembler;
 asm
         MOV     EAX,[EAX].vmtFieldTable
         OR      EAX,EAX
         JE      @@1
         MOV     EAX,[EAX+2].Integer
 @@1:
 end;

 procedure TForm1.Button1Click(Sender: TObject);

   procedure Display(const S: string);
   begin
     memo1.Lines.Add(S);
   end;

    var
   pFCT: PFieldClassTable;
   aClass: TClass;
   i: SmallInt;
 begin
   memo1.Clear;
   aClass := Classtype;
   while aClass <> TPersistent do
    begin
     Display('Registered classes for class ' + aClass.ClassName);
     pFCT := GetFieldClasstable(aClass);
     if not Assigned(pFCT) then
       Display('  No classes registered')
     else
      begin
       Display(Format('  %d classes registered', [pFCT^.Count]));
       for i := 0 to pFCT^.Count - 1 do
         Display('  ' + pFCT^.Classes[i]^.ClassName);
     end;
     aClass := aClass.ClassParent;
   end
 end;