| CObject | 
| └CCmdTarget | 
| └CDocItem | 
| └COleServerItem | 
| └CDocObjectServerItem | 
| CDocObjectServerItem | 构造一个CDocObjectServerItem对象 | 
| OnHide | 如果框架要隐藏一个DocObject对象,产生异常 | 
| OnOpen | 由框架调用,使DocObject项在框架内是活动的。如果项不是DocObject对象,调用COleServerItem::OnOpen | 
| OnShow | 由框架调用,使DocObject项在框架内是活动的。如果项不是DocObject对象,调用COleServerItem::OnShow |