What's New in Microsoft Office Visio 2007 for Automation Developers
Microsoft Office Visio 2007 provides a powerful single platform for your custom drawing solutions. New Automation objects, collections, properties, methods, enumerations, and events, along with new ShapeSheet cells and functions, give you more options for defining the behavior of the elements in your solutions.
New features for developers in Visio 2007
New Objects, Collections, and Enumerations
Object model changes since Microsoft Office 2003
For a list of new ShapeSheet cells and functions, see the Microsoft Office Visio 2007 ShapeSheet Reference.
For the latest information about developing with Visio, including product news, technical articles, downloads, samples, and the Visio SDK, see the MSDN Visio Developer Center.