If doStuff() is not const, then don't declare d pointer as const: Q_D(myClass) // NO "const" here! d->doStuff();

Hi, Adding link to the corresponding code review.

@yuvaram If so, compile it with Network Download Example, which is officially available from Qt.

@Exotic_Devel said: Q_SLOTS Usar a macro em vez da keyword é recomendada quando você usa outras bibliotecas que podem colidir com o Qt em relação aos signals/slots, que é o caso do Boost.

@Jessica you're welcomed. Please don't forget to mark the post as solved.

Hi, QT_NO_PRINTER is (or not) defined when compiling Qt, not when loading or not a module. One thing you could is the qtHaveModule() function in your pro file and create the defines you need there. Hope it helps