Note that if you are using MS Visual Studio and Qt, and you need to add a specific qt module to your project, you do not need to have a .pro file just for that. That would be the way to go when not using VS.
Instead, in Visual Studio select your project, select menu "Project / Properties", there you should have an entry "Qt Project Settings", and there a section "General", there a setting "Qt Modules" which probably already contains "core" and some entries.
Add your module to this line. Remember to do that for all your configurations and platforms.
