AutoCAD 2021 と AutoCAD 2021 ベースの製品の ActiveX API に対して行われた追加と変更を示します。
AcadAcCmColor
Version number of the class has been incremented from 23 to 24; use the ProgID AutoCAD.AcCmColor.24
AcadApplication
Major version number of the class has been incremented from 23 to 24
Use the ProgID AutoCAD.Application.24 to create an instance of AutoCAD 2021.
AcadLayerStateManager
Version number of the class has been incremented from 23 to 24; use the ProgID AutoCAD.AcadLayerStateManager.24
AcadSecurityParams
Version number of the class has been incremented from 23 to 24; use the ProgID AutoCAD.SecurityParams.24