How to get DeviceID for a specific button pressed?

[MasterGroosha]

Hello, Sir.
I have troubles with understanding the documentation, could you please point me to the right direction?

I have a "laptop" with keyboard and touchpad. Unfortunately, the touchpad is somehow "hacked" by chinese manufacturers, so it has smart gestures emulated. So whenever I swipe left on touchpad, it sends "Left Windows" button.
As far as I see, I can try filtering such buttons by getting DeviceID of keyboard & touchpad and simply ignoring "Left Windows" sends by touchpad.

GetDevInfo function requiers an index. However is there any way to get device which send a specific button?

[MasterGroosha]

So, I'm using your example №2 to get info for "Left Windows" button.
Rows 1 & 2 are from keyboard while rows 3 & 4 are from touchpad. You see, there is no difference, and I cannot get any specific info about devices. What modifications to example №2 should I make to get at least DeviceIDs? And how to filter them later using AHKHID?

[MasterGroosha]

So somehow I managed to get handle (?) of device. However I don't know how to filter input based on that handle (?) and how to make it permanent. I guess the numbers will change after reboot.

#NoEnv
#SingleInstance force
SendMode Input
SetWorkingDir %A_ScriptDir%
#Include AHKHID.ahk

AHKHID_UseConstants()

;Intercept WM_INPUT
OnMessage(0x00FF, "InputMsg")
AHKHID_AddRegister(1)
AHKHID_AddRegister(1, 6, 0)
AHKHID_Register()

iCount := AHKHID_GetRegisteredDevs(uDev)
msgbox, %iCount%

OnMessage(0x00FF, "InputMsg")

InputMsg(wParam, lParam) {
    Local r, h
    Critical    ;Or otherwise you could get ERROR_INVALID_HANDLE
    
    ;Get device type
    d_handle := AHKHID_GetInputInfo(lParam, II_DEVHANDLE)
    btn_id := AHKHID_GetInputInfo(lParam, II_KBD_VKEY) 
}

[MasterGroosha]

And the core problem is that setting AHKHID_AddRegister(1, 6, 0, RIDEV_INPUTSINK) doesn't allow to grab input from any window, only when script is in foreground (despine RIDEV_INPUTSINK being set)

[ghost]

I have the same problem. I can't obtain which keyboard has send the key.