Basic bluetooth

[digtail]

Hi, I got a PTH-660 graphics tablet and would like to eventually get it to work it opentabletdriver via bluetooth. I poked around a bit and found out that there is some device information available even via bluetooth. I don't know how different devices report themselves but at least my intuos pro drawing tablet advertised its vendor and product id.

showing `DeviceList.Local.GetHidDevices()`:

Raydium Corporation Raydium Touch System (no serial number) (VID 9094, PID 17208, version 2.1)
unknown BT IntuosPro M unknown (VID 1386, PID 864, version 0.0)

Interestingly, for me HidSharpCore does not find the bluetooth tablet at all and doesn't report the vendor and product id of the bluetooth modem. I suspect this might depend on how the modem is connected internally.

My fork of HidSharpCore has an executable which can be run with dotnet run -p HidSharp. It will print a list of all local HID devices to stdout.

Someone with more experience or willingness to figure things out will need to pick this up, so far I was not able to get this to work in opentabletdriver. For some reason when run from opentabletdriver my code does not find a parent that belongs to the hid subsystem.