1：需要引用acmgd.dll acdbmgd.dll,AcCoreMdg.dll, accui.dll 四个dll
2: 2010下的的acmgd.dll被拆分为acmgd.dll和AcCoreMdg.dll两个文件,
其中AcCoreMdg.dll存储核心方法,acmgd.dll存储扩展方法;
3：共4个类被拆分为核心方法和扩展方法到AcCore.Mdg.dll AcMgd.dll
- Document (and DocumentExtension)
- DocumentCollection (and DocumentCollectionExtension)
- Editor (and EditorExtension)
- Window (and WindowExtension)
待