Continuing with the convoluted build configuration automation model (EnvDTE/EnvDTE80) and its diagram series of articles that I started yesterday, today a new installment about how to get the information about the build configuration / platforms for a given EnvDTE.Project from a Visual  Studio add-in:

HOWTO: Get the project configurations / platforms from a Visual Studio add-in
http://www.mztools.com/articles/2013/MZ2013006.aspx