Hi,
I was wondering how you were coming with your implementation of xinput1_3.dll ?
It sounds quite interesting although I would personally prefer the wine implementation to be able to use all joysticks and not just Xbox 360 controllers. Perhaps another configuration screen could be added to winecfg so that you can map your own joystick/joysticks controls to the key codes that are returned by XInputGetKeystroke?
Regards, Andrew