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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.

  • 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 is licensed as a software development kit (SDK) exclusively from our partners, Tech Soft 3D. To obtain a copy of the RealDWG software development kit (SDK) license application, simply download a copy from Tech Soft 3Dor email them.

  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? RealDWG® 2020 is only available for 64-bit operating systems.  RealDWG® 2018 and 2019 are available for both 32-bit and 64-bit operating systems. 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® 2020

  • Microsoft® Windows® 7 SP1 with Update KB4019990 (64-bit only), Microsoft Windows 8.1 with Update KB2919355 (64-bit only), or Microsoft Windows 10 Anniversary Update (64-bit only) (version 1803 or higher)
  • 3+ GHz or faster 64-bit (x64) processor
  • 16 GB RAM or more
  • 2 GB free hard disk available not including installation requirements
  • Visual Studio 2017 Update 2 (version 15.7.5 and earlier with C++ option installed)
  • Available as download only

Licensing

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

Autodesk’s partner, Tech Soft 3D is the worldwide exclusive reseller of RealDWG. Payments will be made directly to Tech Soft 3D. RealDWG is licensed as a software development kit (SDK) exclusively from our partners, Tech Soft 3D. To obtain a copy of the RealDWG software development kit (SDK) license application, simply download a copy from Tech Soft 3D or email them.