Use the Microsoft .NET Framework

How VBA Is Implemented in AutoCAD

AutoCAD ActiveX and VBA Together

 

ActiveX and VBA Developer's Guide > Introduction > Overview of AutoCAD Visual Basic for Applications (VBA) Interface > How VBA Is Implemented in AutoCAD > 

Dependencies and Restrictions

If you install, reinstall, or uninstall Microsoft Office or other VBA applications after installing AutoCAD, reinstall AutoCAD and reboot your system.