Hi Escallon,
Yes, the current C/C++ samples are written using the C API directly. It was important for us initially to have the C API exercised as much as possible so we could find areas of improvement and simplification.
But now it is definately on our todo list to have a new take on the C/C++ SDK and write samples using the C++ binding. Inspired by the .NET SDK we have developed since, we will probably extract and expand common functionality into a separate EyeXFramework for C++ and provide some code integrating EyeX into one or two specific C++ GUI frameworks.