I'm not seeing any way to easily set the parameter at runtime with a preference. I've not come across any equivalent Qt::AA_ or anything. You can pass platform plugin arguments via a qt.conf file, though:
Code:
[Platforms]
WindowsArguments=altgr
And we can include a qt.conf file as an internal resource, but I'm not certain we could include logic to load
different qt.conf files (or skip loading one entirely). Or if we could, I don't know if it would get loaded soon enough to effect the windows platform plugin.
I'm just not certain how to proceed.