CAD+开发小结+交互+选择集+深度拷贝AcDbObjectId中指向的实体集+读取其他DWG文件
深度拷贝将数组中的实体ID指向的实体拷贝至blockId为ID的块中AcDbIdMappingadimIdMap;AcApDocument*pDoc=acDocManager->curDocument();acDocManager->lockDocument(pDoc,AcAp::kWrite);//锁定当前文档acdbHostApplicationServices()->workingDatab