Ugly app fonts...
I've got a qt 4.8.6 app that runs on Windows, Macos and Linux.
I've been using the Linux one quite a bit recently, and have noticed that the font - including in the menu bar and all controls - is butt ugly! it certainly looks nothing like the other apps that I run on my Ubuntu14.04/cairo-dock desktop, which all have that distinctive gtk font. qtcreator itself looks OK though...
I ran qtconfig, but all the fonts available here look the same, ie: the ugly font my app uses. I can change style/size in qtconfig though.
I have also tried deleting ~/.config/Trolltech.conf
Ok, found that if I go...
...qtconfig actually shows a bunch of different looking fonts, ie: appears to be working.
sudo ./MyApp doesn't help though.
Upgrading to Qt5 fixed the problem.