BetterJoy v6.4a is released. Allows the Nintendo Switch Pro Controller to be used with the Cemu Emulator and Cemuhook. Cemu is a Nintendo Wii U emulator that runs commercial games. Highly experimental software to emulate Wii U applications on PC.

BetterJoy Changelog:
An alpha (α) release of v6.4 - primarily to push the improved rumble out. This version gets rid of the annoying high-pitched rumble sounds that occurred at certain amplitudes.
α is because there is an "Add Controllers" option that hasn't been fully tested, but should allow (at least in theory) to add 3rd party Joycons and Pro Controllers.

Download: BetterJoy v6.4a x86
Download: BetterJoy v6.4a x64
Source: Here