unit Unitfile;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    Button2: TButton;
    Memo1: TMemo;
    Label1: TLabel;
    GroupBox1: TGroupBox;
    Edit2: TEdit;
    Edit3: TEdit;
    Label2: TLabel;
    Label3: TLabel;
    Button3: TButton;
    procedure FormCreate(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    MyInterface:ITypeDllServer;//聲明接口變量
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  MyInterface := CoTypeDllServer.Create;//創建對象
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  MyInterface.SetName(Edit1.Text); //設置員工姓名
  Memo1.Lines.Append('現在員工姓名已設置為：'+Edit1.Text);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  //獲得員工姓名
  Memo1.Lines.Append('當前員工姓名為：'+MyInterface.GetName);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  //計算員工薪水
  Memo1.Lines.Append('員工'+MyInterface.GetName+'的工資為：'+
      FloatToStr(MyInterface.GetSalary(StrToFloat(Edit2.Text),
      StrToFloat(Edit3.Text))));
end;

end.