RealDWG Developer Center

Get to market faster and give your products a competitive edge with the RealDWG® software development kit (SDK) from Autodesk. It's the only software development toolkit that provides DWG™ file read/write capability from the source.

The RealDWG toolkit helps you share design data with confidence using the native DWG file format so you can create applications with 100 percent DWG read/write capability. Deliver your products with the latest DWG file technology and DWG viewers available from Autodesk.

The RealDWG software library allows C++ and .NET developers to read and write DXF™ and DWG™ files created with AutoCAD® software. The most current version of RealDWG provides compatibility with AutoCAD DWG files, including read and write support for AutoCAD releases since AutoCAD Release 14 and drawing enhancements available with the most current version of AutoCAD. RealDWG is also used internally by Autodesk to provide DWG support in non-AutoCAD-based applications, such as Autodesk® Revit® software-based products and Autodesk® Inventor®software products.

RealDWG licensing is handled globally by our partner Tech Soft 3D. To learn more about licensing RealDWG please go to the Tech Soft 3D RealDWG page.

  • The "My First AutoCAD plug-in" training is using the .NET API environment, which can also be used with RealDWG. It may be of interest if you are just getting started. Remember that RealDWG is the database component of AutoCAD and uses the same programming constructs.

  • Get news, expert tips and insider resources directly from Autodesk software engineers

  • Take part in active API discussion forums moderated by Autodesk software engineers. RealDWG is a subset of ObjectARX, and the discussion forum is here.

  • Get easy access to Forge APIs and documentation, tutorials, GitHub samples, support and more for Autodesk cloud-based software and components in your own web and mobile applications.

  • DevTV: Introduction to RealDWG Programming. This is a short video tutorial to starting your first RealDWG .NET application. Download

RealDWG Frequently Asked Questions

  1. What is RealDWG?
    The RealDWG® developer toolkit is a software library that allows C++ and .NET developers to read and write AutoCAD® software DWG™ and DXF™ files.

  2. How do I license RealDWG?
    RealDWG developer toolkit licensing is handled globally by our partner Tech Soft 3D. More information on licensing and pricing can be found on the Tech Soft 3D RealDWG page. Click here to test RealDWG.

  3. What is the difference between RealDWG® and ObjectARX® for AutoCAD?
    RealDWG is a subset of the ObjectARX® programming environment and contains the APIs for reading and writing AutoCAD DXF and DWG files. RealDWG does not contain support for viewing and accessing the AutoCAD user interface.

    Also, ObjectARX applications always require AutoCAD as their host application. RealDWG does not require the presence of AutoCAD software. RealDWG is used to create host applications, but ObjectARX is not.

  4. Is developer support or training available for RealDWG®?
    Developer support for RealDWG® is available through the Autodesk public forums (choose the ObjectARX or .NET forum depending on which RealDWG API you are using) or through the Autodesk Developer Network (ADN).

  5. Is RealDWG® available for 32-bit and 64-bit operating systems? Starting with 2020, RealDWG® is only available for 64-bit operating systems. RealDWG® 2019 is available for both 32-bit and 64-bit operating systems. However, deployment of 32-bit applications on a 64-bit operating system is not supported.
    Developer support for RealDWG® is available through the Autodesk public forums (choose the ObjectARX or .NET forum depending on which RealDWG API you are using) or through the Autodesk Developer Network (ADN).

Learning

DevTV: Introduction to RealDWG Programming

A short video tutorial to starting your first RealDWG .NET application
View online | Download

System Requirements

For 64-Bit RealDWG® 2022

  • Operating System: 64-bit Microsoft Windows 10. See Autodesk’s Product Support Lifecycle for support information
  • Processor: 3+ GHz or faster
    Single- or Multi-Core Intel®, Xeon®, or i-Series 64-bit processor or AMD® equivalent to SSE2 technology. Highest affordable CPU speed rating is recommended.
    Note: AutoCAD® software-based products utilize multiple cores for many tasks.
  • Memory: 16 GB RAM or more
  • Disk space: 4 GB free hard disk available not including installation requirements
  • Development environment: Microsoft® Visual Studio® 2019 version 16.7 (with C++ option installed)
  • Installation: Download only

For 64-Bit RealDWG® 2021

  • Operating system: See Autodesk’s Product Support Lifecycle for support information
  • Processor: 3+ GHz or faster
  • Memory: 16 GB RAM or more
  • Disk space: 4 GB free hard disk available not including installation requirements
  • Development environment: Microsoft® Visual Studio® 2019 (with C++ option installed)
  • Installation: Download only

For 64-Bit RealDWG® 2020

  • Operating system: See Autodesk’s Product Support Lifecycle for support information
  • Processor: 3+ GHz or faster
  • Memory: 16 GB RAM or more
  • Disk space: 4 GB free hard disk available not including installation requirements
  • Development environment: Microsoft® Visual Studio® 2019 (with C++ option installed)
  • Installation: Download only

For 32-Bit and 64-Bit RealDWG® 2019

  • Operating system: Microsoft® Windows® 7 SP1 (32-bit & 64-bit), Microsoft Windows 8.1 with Update KB2919355 (32-bit & 64-bit), Microsoft Windows 10 Anniversary Update (64-bit only) (version 1607 or higher)
    See Autodesk’s Product Support Lifecycle for support information
  • Processor: 3+ GHz or faster
  • Memory: 16 GB RAM or more
  • Disk space: 2 GB free hard disk available not including installation requirements
  • Development environment: Visual Studio 2017 Update 2 (with C++ option installed)
  • Installation: Download only

For 32-Bit and 64-Bit RealDWG® 2018

  • Operating system: Microsoft® Windows® 7 SP1 (32-bit & 64-bit), Microsoft Windows 8.1 with Update KB2919355 (32-bit & 64-bit), Microsoft Windows 10 Anniversary Update (64-bit only) (version 1607 or higher)
    See Autodesk’s Product Support Lifecycle for support information
  • Processor: 1+ GHz or faster
  • Memory: 8 GB RAM or more
  • Disk space: 1 GB free hard disk available not including installation requirements
  • Development environment: Visual Studio 2015 Update 3 (with C++ option installed)
  • Installation: Download only

Licensing

Licensing and pricing inquiries for the Americas, Europe, the Middle East, and Africa regions should contact Tech Soft 3D for details.

Autodesk’s partner, Tech Soft 3D is the worldwide exclusive reseller of the RealDWG software development kit (SDK). Payments will be made directly to  Tech Soft 3D. To obtain a copy of the RealDWG software development kit (SDK) license application please contact Tech Soft 3D or test RealDWG.

Autodesk Developer Network

ADN OPEN

For more information on Autodesk desktop product customization and APIs please visit Autodesk Developer Network Open.

ADN MEMBERSHIP

If you need more professional customization support, consider joining the Autodesk Developer Network. that includes direct support, and development product licenses.

Resources

ACCESS AUTODESK SOFTWARE FOR FREE

Trial versions are available for most Autodesk products. Download your free 30-days trial version today. You can obtain Autodesk desktop software for development use on an on-going basis by joining ADN.

AUTODESK CLOUD TECHNOLOGIES

All the information and resources needed to use Autodesk cloud-based software and components in your own web and mobile applications can be found on the Autodesk Forge Developer Portal. Get easy access to Forge APIs and documentation, tutorials, GitHub samples, support and more.

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