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.

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).

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.