Welcome to OpenDCL
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Welcome to OpenDCL, an application toolkit which enables the creation of feature rich user interfaces for AutoLISP and Visual LISP in AutoCAD versions 2004 to 2008.

OpenDCL is derived from ObjectDCL, a commercial application by 3rd Day Software that was released as open source under the GNU General Public License in 2006 by owner Chad Wanless.

OpenDCL is the result of a major review and rewrite of ObjectDCL 3.0 code and is aimed at ensuring stable operation in current AutoCAD versions as well as to provide a solid foundation for future development.  OpenDCL represents the combined work of the original authors and individuals who have contributed to the open source project on SourceForge.  The project has addressed pre-exisiting bugs, added new features and made many changes.

What is OpenDCL?
OpenDCL provides the tools to create a wide range of windows dialog interfaces for use by your AutoLISP and Visual LISP applications. The key components of the OpenDCL package are an editor and ObjectARX applications (runtimes). The editor allows you to create, organize and modify dialog projects and saves them within an .odcl (or .odcl.lsp) file for distribution with your AutoLISP or Visual LISP application.

ObjectARX files (named OpenDCL.16.arx or OpenDCL.17.arx) runtime modules are also distributed with your application and are loaded by AutoCAD to read and display the dialogs defined within .odcl (or .odcl.lsp) files.

OpenDCL is offered in two packages, one for distribution with your application and the other to setup a development environment. 

Follow the links below for more information:

What's New & Changed
·      New Features
·      Changes
·      New Functions

Getting Started
·      Tutorials and Examples
·      The Object Browser
·      Getting Help