将输出从shell/dos应用程序导入Delphi应用程序

The example runs ‘chkdsk.exe c:’ and displays the output to Memo1.
Put a TMemo (Memo1) and a TButton (Button1) on your form. Put this code in the OnCLick event procedure for Button1:

procedure TForm1.Button1Click(Sender: TObject) ;

  procedure RunDosInMemo(DosApp:String;AMemo:TMemo) ;
  const
     ReadBuffer = 2400;
  var
   Security : TSecurityAttributes;
   ReadPipe,WritePipe : THandle;
   start : TStartUpInfo;
   ProcessInfo : TProcessInformation;
   Buffer : Pchar;
   BytesRead : DWord;
   Apprunning : DWord;
  begin
   With Security do begin
    nlength := SizeOf(TSecurityAttributes) ;
    binherithandle := true;
    lpsecuritydescriptor := nil;
   end;
   if Createpipe (ReadPipe,WritePipe,@Security,0) then begin
    Buffer := AllocMem(ReadBuffer + 1) ;
    FillChar(Start,Sizeof(Start),#0) ;
    start.cb := SizeOf(start) ;
    start.hStdOutput := WritePipe;
    start.hStdInput := ReadPipe;
    start.dwFlags := STARTF_USESTDHANDLES + STARTF_USESHOWWINDOW;
    start.wShowWindow := SW_HIDE;

    if CreateProcess(nil,PChar(DosApp),true,NORMAL_PRIORITY_CLASS,nil,start,ProcessInfo)
    then
    begin
     repeat
      Apprunning := WaitForSingleObject
                   (ProcessInfo.hProcess,100) ;
      Application.ProcessMessages;
     until (Apprunning <> WAIT_TIMEOUT) ;
      Repeat
        BytesRead := 0;
        ReadFile(ReadPipe,Buffer[0],ReadBuffer,BytesRead,nil) ;
        Buffer[BytesRead]:= #0;
        OemToAnsi(Buffer,Buffer) ;
        AMemo.Text := AMemo.text + String(Buffer) ;
      until (BytesRead < ReadBuffer) ;
   end;
   FreeMem(Buffer) ;
   CloseHandle(ProcessInfo.hProcess) ;
   CloseHandle(ProcessInfo.hThread) ;
   CloseHandle(ReadPipe) ;
   CloseHandle(WritePipe) ;
   end;
  end;

  begin {button 1 code}
    RunDosInMemo('chkdsk.exe c:',Memo1) ;
  end;

更新：
上面的示例在一个步骤中读取输出。这里是从DelphiDabbler的另一个例子，显示在进程仍在运行时如何读取输出：

function GetDosOutput(CommandLine: string; Work: string = 'C:'): string;
var
  SA: TSecurityAttributes;
  SI: TStartupInfo;
  PI: TProcessInformation;
  StdOutPipeRead,StdOutPipeWrite: THandle;
  WasOK: Boolean;
  Buffer: array[0..255] of AnsiChar;
  BytesRead: Cardinal;
  WorkDir: string;
  Handle: Boolean;
begin
  Result := '';
  with SA do begin
    nLength := SizeOf(SA);
    bInheritHandle := True;
    lpSecurityDescriptor := nil;
  end;
  CreatePipe(StdOutPipeRead,StdOutPipeWrite,@SA,0);
  try
    with SI do
    begin
      FillChar(SI,SizeOf(SI),0);
      cb := SizeOf(SI);
      dwFlags := STARTF_USESHOWWINDOW or STARTF_USESTDHANDLES;
      wShowWindow := SW_HIDE;
      hStdInput := GetStdHandle(STD_INPUT_HANDLE); // don't redirect stdin
      hStdOutput := StdOutPipeWrite;
      hStdError := StdOutPipeWrite;
    end;
    WorkDir := Work;
    Handle := CreateProcess(nil,PChar('cmd.exe /C ' + CommandLine),True,PChar(WorkDir),SI,PI);
    CloseHandle(StdOutPipeWrite);
    if Handle then
      try
        repeat
          WasOK := ReadFile(StdOutPipeRead,Buffer,255,nil);
          if BytesRead > 0 then
          begin
            Buffer[BytesRead] := #0;
            Result := Result + Buffer;
          end;
        until not WasOK or (BytesRead = 0);
        WaitForSingleObject(PI.hProcess,INFINITE);
      finally
        CloseHandle(PI.hThread);
        CloseHandle(PI.hProcess);
      end;
  finally
    CloseHandle(StdOutPipeRead);
  end;
end;