Declare PtrSafe Function GetModuleHandle Lib "kernel32" (ByVal lpModuleName As String) As LongPtr

Key changes:

To confirm the VBA module is active in your 64-bit environment:

If these commands are recognized, the 64-bit module is working correctly.

Autodesk provides the VBA module as a free add-on. However, finding the correct version is critical. Using a VBA enabler from AutoCAD 2013 or 2014 may lead to instability or failure to load.

Use the LongPtr type for handles and pointers. This resolves to 32-bit on 32-bit systems and 64-bit on 64-bit systems.

Visual Basic for Applications (VBA) served as the primary customization and automation language for AutoCAD for nearly two decades. However, Microsoft ceased further development of VBA around 2007, leading Autodesk to transition towards .NET API and Microsoft Visual Studio as the primary development platform.

Despite this shift, a vast library of legacy VBA macros remains in use across the AEC (Architecture, Engineering, and Construction) and manufacturing industries. To support this legacy ecosystem while adhering to modern 64-bit security and memory standards, Autodesk releases the VBA Enabler (or Module) as a separate download. For AutoCAD 2015 running on 64-bit operating systems, this module is not merely an add-on but a compatibility bridge requiring specific architectural considerations.