I totally agree, I've been reading Head First Design Patterns and books about OOP, and I've tried to apply the concepts to my C progs, classes (methods using function pointers), inheritance, and so on. It works well, but the code syntax looks a bit messy .
But in this project I'm really excited because I can use c++ & Qt .
So it will be helpful to have tips, things to have in mind before starting to write a Qt app.