To be honest, I had looked on it but I see one significant Wt design flaw -- it modeled after Qt. Trying to make web applications to look and behave like GUI.
I think, this approach is wrong. There should be clear separation between client side and server side.
If you are interested in C++ web programming take a look on CppCMS which has more traditional MVC model.
Note, I have biased opinion, because I'm developer of CppCMS.
