unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
Label1: TLabel;
procedure Button1Click(Sender: TObject);
end;
// 自定义的TMyClass类
TMyClass = class
Public
FMember1 : Integer;
FMember2 : Integer;
FMember3 : WORD;

FMember4 : Integer;
Procedure Method();
End;
Form1: TForm1;
implementation
*.dfm}
procedure TForm1.Button1Click(Sender: TObject);
Obj : TMyClass;
begin
Obj := TMyClass.Create();
with memo1.Lines do
begin
Add('对象大小：' + IntToStr(Obj.InstanceSize));
Add('对象所在地址 ：' + IntToStr(Integer(Obj)));
Add('FMember1所在地址：' + IntToStr(Integer(@Obj.FMember1)));
Add('FMember2所在地址：' + IntToStr(Integer(@Obj.FMember2)));
Add('FMember3所在地址：' + IntToStr(Integer(@Obj.FMember3)));
Add('FMember4所在地址：' + IntToStr(Integer(@Obj.FMember4)));
end;

Obj.Free();
end;
{ TMyClass }
procedure TMyClass.
begin
//no code
end;
end.