flex vbox 右键问题

Java code

 public function addContextMenu1():void            {                var defaultContextMenu:ContextMenu = new ContextMenu();                    defaultContextMenu.hideBuiltInItems();                                      var arrangeItem0:ContextMenuItem = new ContextMenuItem("大图标");                      arrangeItem0.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, selectHandler1);                      defaultContextMenu.customItems.push(arrangeItem0);                                        var arrangeItem1:ContextMenuItem = new ContextMenuItem("小图标");                      arrangeItem1.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, selectHandler1);                      defaultContextMenu.customItems.push(arrangeItem1);                              func.contextMenu = defaultContextMenu;            }<mx:VBox id="func" width="100%" height="100%" borderStyle="solid" verticalGap="0">              </mx:VBox>

问题：为什么不是VBOX面板的所有区域都有右键事件??还有就是右键菜单的层级结构证明实现

[解决办法]