void setOrientation(int orientation) { long /*int*/ hMenu = parent.handle; MENUITEMINFO info = new MENUITEMINFO(); info.cbSize = MENUITEMINFO.sizeof; info.fMask = OS.MIIM_FTYPE; info.fType = widgetStyle(); OS.SetMenuItemInfo(hMenu, id, false, info); if (menu != null) menu._setOrientation(orientation); }