XD++ Class Library is a set of classes built on the Microsoft Foundation Classes. XD++ was designed from the start to be a reusable class library XD++ supports Documents, Views, and Graphical Objects such as rectangles, ellipses, polygons, metafiles, text, bitmaps, and lines. Objects can be grouped together in a hierarchical structure, forming arbitrarily complex visual objects from basic XD++ objects.With XD++ add in tool you can easy definition of specialized graphical objects containing other objects.XD++ adds graphical diagram interfaces to your MFC applications quickly and easily.