In Qt4, there used to be a tool called qtconfig that allowed you to set the fonts and other stuff. It also picked up the settings from KDE4's control panel.
I'm working with Qt5 now (binary distribution downloaded from qt-project.org), but the default font in all Qt5 applications is too small for me. Is there any way I can increase it to match the rest of the desktop? My default Qt5 style is Fusion.
I tried playing with
~/.config/QtProject.conf (copying the Qt4 settings there), but it didn't help.
I'm using openSUSE 12.2 x86-64.