Запуск разных консольных программ через одну кнопку

unit Unit1;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ShellAPI;
 
type
  TForm1 = class(TForm)
    Button1: TButton;  //Tag = 1
    Button2: TButton;  //Tag = 2
    Button3: TButton;  //Tag = 3
    Button4: TButton;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private { Private declarations }
    Exe_Name: String;
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
 
implementation
 
{$R *.dfm}
 
procedure TForm1.Button1Click(Sender: TObject);
var Prg_Name: String;
begin
 Prg_Name := Format('%sExamples\p%d.dpr', [ExtractFilePath(ParamStr(0)), TButton(Sender).Tag]);
 Exe_Name := ChangeFileExt(Prg_Name, '.exe');
 Memo1.Lines.LoadFromFile(Prg_Name);
end;
 
procedure TForm1.Button4Click(Sender: TObject);
begin
 ShellExecute(0, 'open', PChar(Exe_Name), nil, nil, SW_SHOW);
end;
 
end.