frmdemo.pas

Delphi面向对象编程思想附书源码 好用哦！

unit frmDemo;

interface

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

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

var
  Form1: TForm1;

implementation

uses
DemoSvr_TLB;

{$R *.dfm}

procedure TForm1.Button2Click(Sender: TObject);
var MyCar:IDemoComObj;
begin
  MyCar:=CoDemoComObj.Create;
  MyCar.drive;
  MyCar:=nil;
end;

procedure TForm1.Button1Click(Sender: TObject);
var Bicycle:IDemoComObj;
begin
  Bicycle:=CoDemoComObj.Create;
  Bicycle.ride;
  Bicycle:=nil;
end;

end.