AutoCAD 2021 API History Reference (ActiveX)

Additions and changes made to the ActiveX API in AutoCAD 2021 and AutoCAD 2021-based products.

Classes

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