I am happy to announce that we just released the source for the following Visio add-ins via CodePlex:
If you are not familiar with these add-ins take a look at each of them as posted on the Visio Toolbox site:
Each source project not only contains the code for the add-in but it also contains the setup project, making each of these great samples showing the complete picture for developing and deploying custom add-ins for Visio.
Each project site describes the requirements needed for you to open and build these complete solutions so feel free to download them as a means for learning how you can develop and deploy your own custom add-ins for Visio.
Data Linking and Data Graphics
Each of these solutions demonstrate the use of Visio’s new Data Linking and Data Graphics features and how these features can be controlled easily from managed code.
WMI and System Center
Not only do these solutions demonstrate many of the development tasks associated with Visio add-in development, they also demonstrate the use of the WMI and System Center APIs which are used in these solutions to extract data for use in the Visio diagrams.