aIMxDocument::FocusMap returns a reference (IMap) to the Map currently with focus, and IMxDocument::Maps returns a reference (IMaps) to the entire collection of Map objects. IMxDocument : :FocusMap退回参考(IMap)在当前地图与焦点和IMxDocument : :地图退回参考(IMaps)在地图对象的整个收藏。[translat...