关于等待压缩软件执行完成的问题

shellexecute(handle,nil, 'winrar', PChar('a '+ExtractFilePath(Application.ExeName)+ParamsList[0]+'.rar '+ExtractFilePath(Application.ExeName)+ParamsList[0]),nil,SW_SHOW);

我用这个来压缩文件，压缩完成后客户端通过FTP从服务器下载，请问应该如何等待执行完成，如果用CreateProcess+WaitForSingleObject的话，CreateProcess里面如何给winrar传参数，麻烦大家了

Delphi(Pascal) code

function WinExecAndWait32(Filename: String; Visibility: Integer): Cardinal;
var
  zAppName: array [0 .. 512] of Char;
  zCurDir: array [0 .. 255] of Char;
  WorkDir: String;
  StartupInfo: TStartupInfo;
  ProcessInfo: TProcessInformation;

begin
  // Result := -1;
  StrPCopy(zAppName, Filename);
  GetDir(0, WorkDir);
  StrPCopy(zCurDir, WorkDir);
  FillChar(StartupInfo, Sizeof(StartupInfo), #0);
  StartupInfo.cb := Sizeof(StartupInfo);

  StartupInfo.dwFlags := STARTF_USESHOWWINDOW;
  StartupInfo.wShowWindow := Visibility;
  if not CreateProcess(nil, zAppName, { pointer to command line string }
    nil, { pointer to process security
      attributes }
    nil, { pointer to thread security
      attributes }
    False, { handle inheritance flag }
    CREATE_NEW_CONSOLE or { creation flags }
    NORMAL_PRIORITY_CLASS, nil, { pointer to new environment block }
    nil, { pointer to current directory name }
    StartupInfo, { pointer to STARTUPINFO }
    ProcessInfo) then
    Result := $FF { pointer to PROCESS_INF }

  else
  begin
    WaitforSingleObject(ProcessInfo.hProcess, INFINITE);
    GetExitCodeProcess(ProcessInfo.hProcess, Result);
  end;
end;

//调用
WinExecAndWait32(FilePath + 'formats\mktargz.bat', SW_NORMAL);

请问参数怎么传

//把文件夹 Bitmaps 中全部的文件添加到 RAR 压缩文件 Pictures 中:
WinExecAndWait32('WinRAR a Pictures.rar Bitmaps', SW_NORMAL);