关于DEPHI的接口问题(100分)

unit mtReaper;

interface
type
  ImtReaper=interface
    ['{F3E97960-3F35-11D7-B847-001060806215}']
  end;
  
  TmtReaper=class(TInterfacedObject,ImtReaper)
  private
    FObject:TObject;
  public
    constructor Create(AObject:TObject);
    destructor Destroy;override;
  end;

implementation

uses SysUtils;

constructor TmtReaper.create(AObject:TObject);
begin
  FObject:=AObject;
end;

destructor TmtReaper.Destroy;
begin
  FreeAndNil(FObject);
  Inherited;
end;

end.

unit frmMain;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TNoisyDeath = class(TObject)
  public
    destructor Destroy;override;
  end;

  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    procedure WaitAWhile;
  public
    { Public declarations }
  end;



var
  Form1: TForm1;

implementation
uses mtReaper;
{$R *.dfm}
destructor TNoisyDeath.Destroy;
begin
  showMessage('对象销毁了！');
  inherited;
end;

procedure TForm1.WaitAWhile;
var i:Integer;
begin
  for i :=0  to 5000  do
  begin
    caption:=Inttostr(i);
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
var NoisyDeath:TNoisyDeath;
begin
  NoisyDeath:=TNoisyDeath.create;
  try
    waitAWhile;
  finally
    NoisyDeath.Free;
  end;

end;

procedure TForm1.Button2Click(Sender: TObject);
var
  NoisyDeath:TNoisyDeath;
  girm:ImtReaper;
begin
  NoisyDeath:=TNoisyDeath.create;
  girm:=TmtReaper.Create(NoisyDeath);
  waitAWhile;
end;

end.