Как программе удалить саму себя

uses
  Windows, SysUtils;

procedure DeleteMe;
var
  BatchFile: TextFile;
  BatchFileName: string;
  ProcessInfo: TProcessInformation;
  StartUpInfo: TStartupInfo;
begin
  { создаём бат-файл в директории приложения }
  BatchFileName := ExtractFilePath(ParamStr(0)) + '$$336699.bat';

  { открываем и записываем в файл }
  AssignFile(BatchFile, BatchFileName);
  Rewrite(BatchFile);

  Writeln(BatchFile, ':try');
  Writeln(BatchFile, 'del "' + ParamStr(0) + '"');
  Writeln(BatchFile,
  'if exist "' + ParamStr(0) + '"' + ' goto try');
  Writeln(BatchFile, 'del "' + BatchFileName + '"');
  CloseFile(BatchFile);

  FillChar(StartUpInfo, SizeOf(StartUpInfo), $00);
  StartUpInfo.dwFlags := STARTF_USESHOWWINDOW;
  StartUpInfo.wShowWindow := SW_HIDE;

  if CreateProcess(nil, PChar(BatchFileName), nil, nil,
  False, IDLE_PRIORITY_CLASS, nil, nil, StartUpInfo,
  ProcessInfo) then
  begin
    CloseHandle(ProcessInfo.hThread);
    CloseHandle(ProcessInfo.hProcess);
  end;
end;

program delete2;

uses
  SysUtils, windows;

var
  BatchFile: TextFile;
  BatchFileName: string;
  TM: Cardinal;
  TempMem: PChar;

begin
  BatchFileName:=ExtractFilePath(ParamStr(0))+ '$$336699.bat';


  AssignFile(BatchFile, BatchFileName);
  Rewrite(BatchFile);

  Writeln(BatchFile,':try');
  Writeln(BatchFile,'del "' + ParamStr(0) + '"');
  Writeln(BatchFile,'if exist "' + ParamStr(0) + '" goto try');
  Writeln(BatchFile,'del "' + BatchFileName + '"');
  CloseFile(BatchFile);

  TM:=70;
  GetMem (TempMem,TM);
  GetShortPathName (pchar(BatchFileName), TempMem, TM);
  BatchFileName:=TempMem;
  FreeMem(TempMem);

  winexec(Pchar(BatchFileName),sw_hide);

  halt;
end.