const
  H_IN_READ = 1;
  H_IN_WRITE = 2;
  H_OUT_READ = 3;
  H_OUT_WRITE = 4;
  H_ERR_READ = 5;
  H_ERR_WRITE = 6;

type
  TPipeHandles = array [1..6] of THandle;
var
  hPipes: TPipeHandles;
  ProcessInfo: TProcessInformation;

(************CREATE HIDDEN CONSOLE PROCESS************)
function CreateHiddenConsoleProcess(szChildName: string;
         ProcPriority: DWORD; ThreadPriority: integer): Boolean;
label
  error;
var
  fCreated: Boolean;
  si: TStartupInfo;
  sa: TSecurityAttributes;
begin
  // Initialize handles
  hPipes[ H_IN_READ ] := INVALID_HANDLE_VALUE;
  hPipes[ H_IN_WRITE ] := INVALID_HANDLE_VALUE;
  hPipes[ H_OUT_READ ] := INVALID_HANDLE_VALUE;
  hPipes[ H_OUT_WRITE ] := INVALID_HANDLE_VALUE;
  hPipes[ H_ERR_READ ] := INVALID_HANDLE_VALUE;
  hPipes[ H_ERR_WRITE ] := INVALID_HANDLE_VALUE;
  ProcessInfo.hProcess := INVALID_HANDLE_VALUE;
  ProcessInfo.hThread := INVALID_HANDLE_VALUE;
  // Create pipes
  // initialize security attributes for handle inheritance (for WinNT)
  sa.nLength := sizeof(sa);
  sa.bInheritHandle := TRUE;
  sa.lpSecurityDescriptor := nil;
  // create STDIN pipe
  if not CreatePipe( hPipes[ H_IN_READ ], hPipes[ H_IN_WRITE ], @sa, 0 ) then
    goto error;
  // create STDOUT pipe
  if not CreatePipe( hPipes[ H_OUT_READ ], hPipes[ H_OUT_WRITE ], @sa, 0 ) then
    goto error;
  // create STDERR pipe
  if not CreatePipe( hPipes[ H_ERR_READ ], hPipes[ H_ERR_WRITE ], @sa, 0 ) then
    goto error;
  // process startup information
  ZeroMemory(Pointer(@si), sizeof(si));
  si.cb := sizeof(si);
  si.dwFlags := STARTF_USESHOWWINDOW or STARTF_USESTDHANDLES;
  si.wShowWindow := SW_HIDE;
  // assign "other" sides of pipes
  si.hStdInput := hPipes[ H_IN_READ ];
  si.hStdOutput := hPipes[ H_OUT_WRITE ];
  si.hStdError := hPipes[ H_ERR_WRITE ];
  // Create a child process
  try
    fCreated := CreateProcess( nil, PChar(szChildName), nil, nil, True,
    ProcPriority, // CREATE_SUSPENDED,
    nil, nil, si, ProcessInfo );
  except
    fCreated := False;
  end;

  if not fCreated then
    goto error;

  Result := True;
  CloseHandle(hPipes[ H_OUT_WRITE ]);
  CloseHandle(hPipes[ H_ERR_WRITE ]);
  // ResumeThread( pi.hThread );
  SetThreadPriority(ProcessInfo.hThread, ThreadPriority);
  CloseHandle( ProcessInfo.hThread );
  Exit;
  //-----------------------------------------------------
  error:
    ClosePipes( hPipes );
    CloseHandle( ProcessInfo.hProcess );
    CloseHandle( ProcessInfo.hThread );
    ProcessInfo.hProcess := INVALID_HANDLE_VALUE;
    ProcessInfo.hThread := INVALID_HANDLE_VALUE;
    Result := False;
end;