Profi_GMan

DWORD _res = 22;
    QString strResult;
       HANDLE hPipeRead, hPipeWrite;

       SECURITY_ATTRIBUTES saAttr = { sizeof(SECURITY_ATTRIBUTES) };
       saAttr.bInheritHandle = TRUE;   //Pipe handles are inherited by child process.
       saAttr.lpSecurityDescriptor = NULL;

       // Create a pipe to get results from child's stdout.
       if ( !CreatePipe(&hPipeRead, &hPipeWrite, &saAttr, 0) ) {
           qCritical() << QObject::tr("Cannot create thread");
           return;
       }
       qDebug() << QObject::tr("Thread successfully created");

       STARTUPINFO si = { sizeof(STARTUPINFO) };
       si.dwFlags     = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
       si.hStdOutput  = hPipeWrite;
       si.hStdError   = hPipeWrite;
       si.wShowWindow = SW_HIDE;       // Prevents cmd window from flashing. Requires STARTF_USESHOWWINDOW in dwFlags.

       PROCESS_INFORMATION pi  = { 0 };

       BOOL fSuccess = CreateProcessW( NULL, (LPWSTR)command.toStdWString().c_str(), NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &si, &pi);
       if (! fSuccess)
       {
           CloseHandle( hPipeWrite );
           CloseHandle( hPipeRead );
           qCritical() << QObject::tr("Cannot create procces");
           return;
       }
       qDebug() << QObject::tr("Proccess successfully created");

       int i = 0;
       bool bProcessEnded = false;
       for (; !bProcessEnded ;)
       {
           // Give some timeslice (50ms), so we won't waste 100% cpu.
           bProcessEnded = WaitForSingleObject( pi.hProcess, 50) == WAIT_OBJECT_0;

           // Even if process exited - we continue reading, if there is some data available over pipe.
           for (;;)
           {
               i++;
               char buf[1024];
               DWORD dwRead = 0;
               DWORD dwAvail = 0;

               if (!::PeekNamedPipe(hPipeRead, NULL, 0, NULL, &dwAvail, NULL))
                   break;

               if (!dwAvail) // no data available, return
                   break;

               DWORD temp = sizeof(buf) - 1;
               if (!::ReadFile(hPipeRead, buf, qMin(temp, dwAvail), &dwRead, NULL) || !dwRead)
                   // error, the child process might ended
                   break;

               buf[dwRead] = 0;
               strResult += buf;
           }
       } //for

    if(GetExitCodeProcess(pi.hProcess, &_res) == 0) _res = GetLastError();
       CloseHandle( hPipeWrite );
       CloseHandle( hPipeRead );
       CloseHandle( pi.hProcess );
       CloseHandle( pi.hThread );