Hey, folks.

So i'm trying to go over Qt with this book "C++ GUI Programming with Qt4, 2nd Edition". Two first exercises worked well with my Qt Creator 4.5.1 and mingw32 but then i got into first "big" program. Qt went apeshit with like 40 errors or something. What am i doing wrong? I guess it's version compatibility problem.

That's example from the book.

find.pro
finddialog.cpp
finddialog.h
main.cpp