protected void drawInformation(GLGraphics gc) {
    super.drawInformation(gc);

    String info2 = "SHFIT+×ó  -  Ç°ÒÆ   SHIFT+ÓÒ  -  ºóÒÆ";
    Point ts = gc.textExtent(info2);
    Point size = getSize();
    gc.drawText(info2, size.x / 2 - ts.x / 2, size.y - ts.y * 2 - 5);
  }
  protected void onKeyDown(int keyCode) {
    super.onKeyDown(keyCode);

    switch (keyCode) {
      case SWT.ARROW_LEFT:
        if ((keyEventMask & SWT.SHIFT) != 0) {
          onMoveUp();
        }
        break;
      case SWT.ARROW_RIGHT:
        if ((keyEventMask & SWT.SHIFT) != 0) {
          onMoveDown();
        }
        break;
    }
    return;
  }