Evolution Computing supports the development of plug-ins for FastCAD, EasyCAD, and our free CADView viewer with the XP Toolkit (XP stands for eXtended Procedures - a name we've used for plug-ins since 1985!). XPs may be deveoped in either Microsoft Visual C 2005 or later, or Macro Assembler 6.11+. The toolkit is free. The toolkit provides example programs, header files, and link libraries for each of the supported products.
Download the latest free V7 XP Toolkit posted 12-June-2012
Download the latest free V6 XP Toolkit posted 12-June-2012