Opendwg库帮助文件OpenDWG™ToolkitReferenceVERSION2.0Copyright©1999OpenDWGAlliance.Allrightsreserved.Informationinthesematerialsisfurnishedforinformationaluseonly,issubjecttochangewithoutnoticeanddoesnotrepresentacommitmentonthepartofOpenDWGAlliance.OpenDWGAllianceassumesnoresponsibilityor