CreateProcess的问题

开启进程的参数配置例子
以下的程序开启一个进程，执行系统的命令提示符（98下为 command.com,2000下为 cmd.exe),目录为系统目录:         STARTUPINFO si;
         ZeroMemory(&si,sizeof(STARTUPINFO));
         si.cb = sizeof(STARTUPINFO);
         si.lpReserved = NULL;
         si.lpReserved2 = NULL;
         si.cbReserved2 = 0;
         si.lpDesktop = NULL;
         char SysDir[256];
         GetSystemDirectory(SysDir,256);
         si.dwFlags = 0;
         si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
//以下三行是标准流的设置，一般你的程序不用
//         si.hStdInput = sList[lCurNum].readInput;
//         si.hStdOutput = sList[lCurNum].writeOutput;
//         si.hStdError = sList[lCurNum].writeError;
         si.wShowWindow = SW_SHOWDEFAULT;
//       si.wShowWindow = SW_HIDE;
         PROCESS_INFORMATION pi;
         try
         {
                  CreateProcess(getenv("COMSPEC"),NULL,NULL,NULL,TRUE,
                                 CREATE_NEW_CONSOLE,NULL,SysDir,&si,&pi);
         }
         catch(...)
         {
                throw ERR_PROCESS_CREATE;
         }