调用CMD的回显

 

CString strCmd="ipconfig /all"; //使用的cmd命令
        SECURITY_ATTRIBUTES sa;
        HANDLE hRead,hWrite;
        sa.nLength = sizeof(SECURITY_ATTRIBUTES);
        sa.lpSecurityDescriptor = NULL;
        sa.bInheritHandle = TRUE;
        if (!CreatePipe(&hRead,&hWrite,&sa,0)) {
            TRACE0("Error On CreatePipe()\n");
            return 0;
        }
        STARTUPINFO si;
        PROCESS_INFORMATION pi;
        si.cb = sizeof(STARTUPINFO);
        GetStartupInfo(&si);
        si.hStdError = hWrite;
        si.hStdOutput = hWrite;
        si.wShowWindow = SW_HIDE;
        si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;


        if (!CreateProcess(NULL,strCmd.GetBuffer(strCmd.GetLength())
            ,NULL,NULL,TRUE,NULL,NULL,NULL,&si,&pi)) {
                TRACE0("Error on CreateProcess()\n");
                return 0;
        }
        if(WaitForSingleObject(pi.hProcess, INFINITE)==WAIT_FAILED)
        {
            TRACE0("Failed!\n");
            return 0;
        }
        CloseHandle(hWrite);

        //char buffer[4096] ={0} ;
        //std::string tmpbuf;
        DWORD filesize=GetFileSize(hRead,NULL);
        char* buffer=new char[filesize+1];
        DWORD bytesRead;
        while(1)
        {
            if(ReadFile(hRead,buffer,4096,&bytesRead,NULL) != NULL) //读取回显内容
            {
                pDlg->m_Edit1 += buffer;
                //UpdateData(FALSE);
                pDlg->PostMessage(WM_UPDATE_INFO);
            }
            else
            {
                break;
            }
        }