Hi Alex, the new QGamePad introduced in Qt5.7 up to Qt5.10 isn't detecting the most common XBox 360 Controller (Win7 to Win10). I stumbled over SDL which seems to have a working interface for controllers and then Google showed me your post. QJoysticks is working prefectly!
Thank you very much for your invested time - it's golden.
PS: I only needed to add#undef main //before int main() to avoid interferences with SDL and Qt