DHM is currently being developed using Borland Delphi 2005. Delphi is a Pascal-based language allows for rapid development of GUI applications that can easily be deployed.
Some info about the syntax of Delphi can be found here:
The DHM source code is included in the main download of the application. It's also being controlled through the usage of Subversion (SVN). If you click on the code tab in SourceForge, you should be able to browse the current source code. With TortoiseSVN, you'll be able to check in your own changes.
Download TortoiseSVN here:... read more