ObjectARX

The ObjectARX® programming environment provides object-oriented C++, C#, and VB .NET application programming interfaces for developers to use, customize, and extend AutoCAD® software and AutoCAD-based products, such as AutoCAD® Architecture, AutoCAD® Mechanical, and AutoCAD® Civil 3D® software. A version of ObjectARX for AutoCAD® for Mac® 2011 software is also now available, though not all APIs are available in the Mac version.

ObjectARX programming environment libraries provide versatile sets of tools for AutoCAD API developers to take advantage of the open architecture of AutoCAD software. They also provide direct access to the AutoCAD database structures, graphics system, and native command definition.

ObjectARX technology helps you to develop fast, efficient, compact CAD applications. It enables power users to customize AutoCAD software and frees CAD designers from repetitive tasks. Smaller files, faster drawing operations, and smooth interoperability make an application built with ObjectARX programming environment your best choice for a design software solution.

• Frequently Asked Questions
  Frequently asked questions about the ObjectARX programming environment from Autodesk.
• License & Download
  Download and get a license for the ObjectARX programming environment from Autodesk.
• System Requirements
  Learn about the recommended system requirements for running the ObjectARX programming environment.
• Join the Autodesk ObjectARX Discussion Group
  Get tips, ask questions, and exchange ideas with other ObjectARX users.