//根據zswang和"超級猛料"部分函數改編
//比放到注冊表里麻煩多了
function GetSpecialFolderDir(const folderid:integer): String;
var
  pidl: pItemIDList;
  buffer: array[0..255] of char;
begin
//取指定的文件夾項目表
//CSIDL_STARTUP:啟動
  SHGetSpecialFolderLocation(application.Handle , folderid, pidl);
  SHGetPathFromIDList(pidl, buffer); //轉換成文件系統的路徑
  Result:=strpas(buffer);
end;

function CreateShellLink(mPath: string; mWorkingDirectory: string;
  mFileName: WideString): Boolean; { 返回創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;
//創建到當前用戶的[啟動]里,CreateLinkToStartUp中最后一個參數設置為True
//創建到所有用戶的啟動里,CreateLinkToStartUp中最后一個參數設置為False
//創建到別的用戶里,可以修改一下，不過。。。這樣做不好吧。。。