afterItem appendItem clear command copy count create create findItem findParentOf getItemList hasItems insertItem operator<< operator<< removeItem setCommand

hasItems() virtual bool hasItems ( ) const pure virtual 检查菜单项是否包含子项 检查菜单项是否包含子项 返回 true:此菜单项包含子项，false:此菜单项不包含子项