Human Interface Device and C#

Aksh Babbar 1

I am currently working on a project where I need to use a touch encoder to provide inputs to the software. The issue that I am facing is that I am unable to set up communication between touch encoder and windows. I am using C#, coding in Visual Studio 2019.
I read a few forums and they said that I need to import hid.dll in order to set up communication, but for some reason my VS is not accepting it as a reference, and I tried all ways online to fix it but none of them is working.
Does anyone have any idea how I can go about this project ?

Timon Yang-MSFT 9,571 Reputation points

2021-02-05T03:19:29.697+00:00

@Aksh Babbar
What went wrong when importing hid.dll? Could you please display some error messages? It is best to add some code you are using so that we can analyze your problem.
Aksh Babbar 1 Reputation point

2021-02-08T15:51:57.853+00:00

I am using this information provided on the Microsoft Website : https://learn.microsoft.com/en-us/uwp/api/windows.devices.humaninterfacedevice?view=winrt-19041
Error that I am getting is that the software is not recognizing the HID device
Castorix31 81,721 Reputation points

2021-02-08T16:22:51.787+00:00

This link is UWP : are you using UWP ? (as you did not set it in Tags)

Otherwise, you can use (HID Application Programming Interface (API)) with P/Invoke
Aksh Babbar 1 Reputation point

2021-02-11T18:20:21.397+00:00

Yes, I am using a UWP app. I was able to setup basic communication but I am facing issues with Output Reports. The function :
HidOutputReport outReport = touchEncoder.CreateOutputReport();
gives an error, which i cant seem to solve. Do you have any idea how I can fix this.
Roy Li - MSFT 31,826 Reputation points Microsoft Vendor

2021-02-23T09:57:55.263+00:00

Have you specific DeviceCapability data in the Capabilities node of your app's manifest file? Like the official sample mentioned here: Custom HID device sample.