Qt what headers to include?

Question

While programming in C++ with Qt what includes should I make? Just 2 includes

#include 
#include 

or

Answer 1

Just include what you need in your classes to speed up compiling. If you're one of the lazy guys and don't matter how long it takes to compile, pick the more generic headers but avoid them if you're looking for optimization (the compiler/linker will most likely remove unused stuff but it's still better to not include it first).

In general I only include new stuff if I need something that's still missing (i.e. not included yet). So, just hit compile. If it's missing something you forgot, add the header. If you don't like that approach, use the generic headers you mentioned.