Python win32process 模块，STARTF_USESTDHANDLES 实例源码

def CreateProcess(cmd, hStdInput, hStdOutput, hStdError):
  """Creates a new process which uses the specified handles for its standard
  input, output, and error. The handles must be inheritable. 0 can be passed
  as a special handle indicating that the process should inherit the current
  process's input, output, or error streams, and None can be passed to discard
  the child process's output or to prevent it from reading any input."""

  # initialize new process's startup info
  si = win32process.STARTUPINFO()
  si.dwFlags = win32process.STARTF_USESTDHANDLES

  if hStdInput == 0:
    si.hStdInput = win32api.GetStdHandle(win32api.STD_INPUT_HANDLE)
  else:
    si.hStdInput = hStdInput

  if hStdOutput == 0:
    si.hStdOutput = win32api.GetStdHandle(win32api.STD_OUTPUT_HANDLE)
  else:
    si.hStdOutput = hStdOutput

  if hStdError == 0:
    si.hStdError = win32api.GetStdHandle(win32api.STD_ERROR_HANDLE)
  else:
    si.hStdError = hStdError

  # create the process
  phandle, pid, thandle, tid = win32process.CreateProcess \
  ( None,                            # appName
    cmd,                             # commandLine
    None,                            # processAttributes
    None,                            # threadAttributes
    1,                               # bInheritHandles
    win32con.NORMAL_PRIORITY_CLASS,  # dwCreationFlags
    None,                            # newEnvironment
    None,                            # currentDirectory
    si                               # startupinfo
  )

  if hStdInput and hasattr(hStdInput, 'Close'):
    hStdInput.Close()

  if hStdOutput and hasattr(hStdOutput, 'Close'):
    hStdOutput.Close()

  if hStdError and hasattr(hStdError, 'Close'):
    hStdError.Close()

  return phandle, pid, thandle, tid