function GetSpecialFolderDir(const folderid:integer): String;
var
  pidl: pItemIDList;
  buffer: array[0..255] of char;
begin
//取指定的文件夹项目表
//CSIDL_STARTUP:启动
  SHGetSpecialFolderLocation(application.Handle , folderid, pidl);
  SHGetPathFromIDList(pidl, buffer); //转换成文件系统的路径
  Result:=strpas(buffer);
end;

function CreateShellLink(mPath: string; mWorkingDirectory: string;
  mFileName: WideString): Boolean; { 返回创建快捷方式是否成功 }
var
  vShellLink: IShellLink;
  vPersistFile: IPersistFile;
  vUnKnown: IUnKnown;
begin
  Result := True;
  try
vUnKnown := CreateComObject(CLSID_ShellLink);
vShellLink := vUnKnown as IShellLink;
vPersistFile := vUnKnown as IPersistFile;
vShellLink.SetPath(PChar(mPath));
vShellLink.SetWorkingDirectory(PChar(mWorkingDirectory));
if ExtractFileExt(mFileName) <> '.lnk' then
   mFileName := mFileName + '.lnk';
vPersistFile.Save(PWChar(mFileName), False);
  except
Result := False;
  end;
end;

function CreateLinkToStartUp(AppName, WorkingDirectory,
  LinkFileName: String; CurrentUser: Boolean = True): Boolean;
begin
  if CurrentUser then //CurrentUser
Result := CreateShellLink(AppName, WorkingDirectory,
   GetSpecialFolderDir(CSIDL_STARTUP) + '\' + LinkFileName)
  else//All User
Result := CreateShellLink(AppName, WorkingDirectory,
   GetSpecialFolderDir(CSIDL_COMMON_STARTUP) + '\' + LinkFileName);
end;
//创建到当前用户的[启动]里,CreateLinkToStartUp中最后一个参数设置为True
//创建到所有用户的启动里,CreateLinkToStartUp中最后一个参数设置为False