case 0x1C:
        key_code = Qt::Key_Select; //tab + tilde
        unicode  = ((!shift) ? 0x09           : 0x7e              );
        break;
      case 0x67:
        key_code = Qt::Key_Up;
        unicode  = 0xffff;
        break;
      case 0x6C:
        key_code = Qt::Key_Down;
        unicode  = 0xffff;
        break;
      case 0x69:
        key_code = Qt::Key_Left;
        unicode  = 0xffff;
        break;
      case 0x6A:
        key_code = Qt::Key_Right;
        unicode  = 0xffff;
        break;
      case 0x66:
        key_code = Qt::Key_Home;
        unicode  = 0xffff;
        break;