Автор: http://www.swissdelphicenter.ch

{ 

  For implementing console input/output for non-console applications you 
  should use the AllocConsole and FreeConsole functions. 
  The AllocConsole function allocates a new console for the calling process. 
  The FreeConsole function detaches the calling process from its console. 
  Example below demonstrates using these functions: 

 ** 

  Um eine Konsole in Nicht-Konsole Anwendungen zu 
  implementieren, verwende die AllocConsole API Funktion auf 
  und FreeConsole um sie wieder freizugeben. 
  Das Untenstehende Beispiel zeigt, wie man diese Funktionen 
  verwendet. 

}


 procedure TForm1.Button1Click(Sender: TObject);
 var
   s: string;
 begin
   AllocConsole;
   try
     // Change color attributes 
    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
                                          FOREGROUND_BLUE OR FOREGROUND_GREEN or
                                          BACKGROUND_RED );
     Write('Type here your words and press ENTER: ');
     Readln(s);
     ShowMessage(Format('You typed: "%s"', [s]));
   finally
     FreeConsole;
   end;
 end;