对话框的菜单 ON_UPDATE_COMMAND_UI

方法一:

 

第一步:  
  响应WM_INITMENUPOPUP消息  
  void   C***::OnInitMenuPopup(CMenu*   pPopupMenu,   UINT   /*nIndex*/,   BOOL   /*bSysMenu*/)    
  {  
  CCmdUI   CmdUI;  
  for(UINT   Idx   =   0;Idx   <   pPopupMenu->GetMenuItemCount();Idx++)  
  {  
  CmdUI.m_nID   =   pPopupMenu->GetMenuItemID(Idx);  
  CmdUI.m_nIndex   =   Idx;  
  CmdUI.m_nIndexMax   =   pPopupMenu->GetMenuItemCount();  
  CmdUI.m_pMenu   =   pPopupMenu;  
  CmdUI.DoUpdate(this,FALSE);  
  }  
   
  }  
  第二步:  
  响应ON_UPDATE_COMMAND_UI或者ON_UPDATE_COMMAND_UI_RANGE消息就可以了.

 

http://blog.youkuaiyun.com/laiyiling/archive/2004/08/27/87027.aspx

 

英文:

http://support.microsoft.com/default.aspx?scid=kb;en-us;242577