function GetConsoleOutput(Command : string;
                          Output, Errors : TStringList) : Boolean;
var
  Buffer : array[0..255] of Char;
  CreationFlags : DWORD;
  NumberOfBytesRead : DWORD;
  PipeErrorsRead : THandle;
  PipeErrorsWrite : THandle;
  PipeOutputRead : THandle;
  PipeOutputWrite : THandle;
  ProcessInfo : TProcessInformation;
  SecurityAttr : TSecurityAttributes;
  StartupInfo : TStartupInfo;
  Stream : TMemoryStream;
begin
  //Initialisierung ProcessInfo
  FillChar(ProcessInfo, SizeOf(TProcessInformation), 0);

  //Initialisierung SecurityAttr
  FillChar(SecurityAttr, SizeOf(TSecurityAttributes), 0);
  SecurityAttr.nLength := SizeOf(TSecurityAttributes);
  SecurityAttr.bInheritHandle := True;
  SecurityAttr.lpSecurityDescriptor := nil;

  //Pipes erzeugen
  CreatePipe(PipeOutputRead, PipeOutputWrite, @SecurityAttr, 0);
  CreatePipe(PipeErrorsRead, PipeErrorsWrite, @SecurityAttr, 0);

  //Initialisierung StartupInfo
  FillChar(StartupInfo, SizeOf(TStartupInfo), 0);
  StartupInfo.cb := SizeOf(TStartupInfo);
  StartupInfo.hStdInput := 0;
  StartupInfo.hStdOutput := PipeOutputWrite;
  StartupInfo.hStdError := PipeErrorsWrite;
  StartupInfo.wShowWindow := SW_HIDE;
  StartupInfo.dwFlags := STARTF_USESHOWWINDOW or STARTF_USESTDHANDLES;

  CreationFlags := CREATE_DEFAULT_ERROR_MODE or
                   CREATE_NEW_CONSOLE or
                   NORMAL_PRIORITY_CLASS;

  // Folgende Zeile ist nur für Delphi ab 2009 erforderlich:
{$IF System.CompilerVersion>=12}
  UniqueString(Command);
{$ENDIF}

  if CreateProcess(nil,
                   PChar(Command),
                   nil,
                   nil,
                   True,
                   CreationFlags,
                   nil,
                   nil,
                   StartupInfo,
                   ProcessInfo) then
  begin
    Result := True;
    //Write-Pipes schließen
    CloseHandle(PipeOutputWrite);
    CloseHandle(PipeErrorsWrite);

    //Ausgabe Read-Pipe auslesen
    Stream := TMemoryStream.Create;
    try
      while ReadFile(PipeOutputRead, Buffer, 255, NumberOfBytesRead, nil) do
      begin
        Stream.Write(Buffer, NumberOfBytesRead);
      end;
      Stream.Position := 0;
      Output.LoadFromStream(Stream);
    finally
      Stream.Free;
    end;
    CloseHandle(PipeOutputRead);

    //Fehler Read-Pipe auslesen
    Stream := TMemoryStream.Create;
    try
      while ReadFile(PipeErrorsRead, Buffer, 255, NumberOfBytesRead, nil) do
      begin
        Stream.Write(Buffer, NumberOfBytesRead);
      end;
      Stream.Position := 0;
      Errors.LoadFromStream(Stream);
    finally
      Stream.Free;
    end;
    CloseHandle(PipeErrorsRead);

    WaitForSingleObject(ProcessInfo.hProcess, INFINITE);
    CloseHandle(ProcessInfo.hProcess);
  end
  else
  begin
    Result := False;
    CloseHandle(PipeOutputRead);
    CloseHandle(PipeOutputWrite);
    CloseHandle(PipeErrorsRead);
    CloseHandle(PipeErrorsWrite);
  end;
end;

program KonsolenTest;

{$APPTYPE CONSOLE}

{$R *.res}

uses
  System.SysUtils,
  WinAPI.Windows,
  System.Classes,
  Console in 'Console.pas'; //für Funktion GetConsoleOutput

var
  outp : TStringList;
  err : TStringList;
  line : String;
begin
  outp := TStringList.Create;
  err := TStringList.Create;
  try
    try
      { TODO -oUser -cConsole Main : Code hier einfügen }
      WriteLn('GetACP Result:');
      WriteLn(IntToStr(GetACP));
      WriteLn('"cmd chcp" with CreateProcess:');
      if GetConsoleOutput('cmd chcp',outp,err) then
      begin
        WriteLn('OutPut:');
        Writeln(outp.Text);
        WriteLn('Errors:');
        Writeln(err.Text);
      end
      else
        Writeln('CreateProcess failed');
    except
      on E: Exception do
        Writeln(E.ClassName, ': ', E.Message);
    end;
    ReadLn(line);
  finally
    outp.Free;
    err.Free;
  end;
end.