在Delphi 7中获取对象的分配地址

program OverrideAfterConstructionEtc;

{$APPTYPE CONSOLE}

uses
  SysUtils,Classes;

type

TA = class( TInterfacedObject)
public
procedure AfterConstruction; override;
procedure BeforeDestruction; override;
protected
FDummyData: array[ 1 .. 1000 ] of longint;
end;

{ TA }

procedure TA.AfterConstruction;
var
    selfPtr: Pointer;
    selfInt: Integer;
    selfStr: string;
    size: Integer;
begin
    inherited AfterConstruction;
    selfPtr := Addr( self );
    selfInt := Integer( selfPtr );
    selfStr := IntToHex( selfInt,8 );

    size := TA.InstanceSize;
    WriteLn( 'TA instance allocated at 0x',selfStr );
    WriteLn( 'TA size is ',size );


end;

procedure TA.BeforeDestruction;
var
    selfPtr: Pointer;
    selfInt: Integer;
    selfStr: string;

    size: Integer;

begin

    selfPtr := Addr( self );
    selfInt := Integer( selfPtr );
    selfStr := IntToHex( selfInt,8 );

    WriteLn( 'Preparing to destroy TA instance allocated at 0x',selfStr );

    size := TA.InstanceSize;
    WriteLn( 'TA size is ',size );

    inherited BeforeDestruction;
end;

const
    maxDummy = 1000;
var
    a: TA;
    dummy: TList;
    iter : integer;

    dummies: array [ 1 .. maxDummy ] of TList;
begin

    // Simulate a set of allocations.

    for iter := 1 to maxDummy do
    begin
        dummy := TList.Create;
        dummies[ iter ] := dummy;
    end;

    // Allocate the object we want to track.
    a := TA.Create;

    // Release the simulated allocations.
    for iter := 1 to maxDummy do
    begin
        dummy := dummies[ iter ];
        dummies[ iter ] := nil;
        FreeAndNil( dummy );
    end;



    // Release the tracked object.

    FreeAndNil( a );

end.

代码的输出是：

> TA实例分配在0x0012FF88
> TA尺寸为4012准备销毁
> TA实例分配在0x0012FF80
> TA尺寸为4012

我不明白“自我”的区别.你能给我一个提示吗？我原以为打印值是一样的.