OneNote intercepts pen cursor before AHK? - autohotkey

Question

Palm rejection is garbage on my laptop, so I disabled the HID touchscreen to make it so that only pen input registers. So, I used AHK to make a script that will scroll around the page after the user presses ALT, and disables scrolling upon the second ALT press.
It works great, except that in OneNote (the Win 10 app), pen cursor input is hijacked by OneNote. For example, if I make a ToolTip, %xPos% %yPos%, then it won't update while my pen cursor is hovering anywhere above the OneNote window. Anywhere outside this works fine.
How can I make AHK steal pen cursor input before OneNote can get it?
isTabletMode := 1
penScrollActive := 0
#MaxThreadsPerHotkey 2 ; Allows a second instance to modify penScrollActive while PenScroll is looping.
$Alt::
; Check if PC is in tablet mode.
; 1 --> Tablet, 0 --> Desktop
RegRead, isTabletMode, HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\ImmersiveShell,TabletMode
if(isTabletMode) {
if(penScrollActive) {
penScrollActive := 0 ; We are already scrolling, so turn it off.
}
else {
penScrollActive := 1 ; We are not scrolling yet, so turn on pen scrolling.
}
GoSub PenScroll
}
else ; If we aren't in tablet mode, then Alt should just send Alt
Send, {Alt}
return
PenScroll:
loop { ; For some reason, while() logic wasn't working, so this is a workaround. Breaks upon the conditional at bottom.
MouseGetPos, mouseX, mouseY
ToolTip, %mouseX% %mouseY% ; For debugging: Output what cursor pos registers as. (This isn't working in OneNote when using the pen input as a cursor (eg. hover) ).
Sleep, 20
MouseGetPos, mouseX_new, mouseY_new
if (mouseX_new - mouseX > 0) ; Horizontal scrolling
Send, {WheelLeft}
else if (mouseX_new - mouseX < 0)
Send, {WheelRight}
if (mouseY_new - mouseY > 0) ; Vertical scrolling
Send, {WheelUp}
else if (mouseY_new - mouseY < 0)
Send, {WheelDown}
if (penScrollActive = 0) ; Conditional to break out
break
}
return
; To Reload the script: Win+`
#`::Reload
Return
#If penScrollActive
LButton::Return

Answer 1

One thing you could maybe try is my AutoHotInterception library for AHK. You install a custom device driver, then you can hook into input events at the driver level, below the OS.
It supports "Absolute" (Graphics-tablet-like) mouse input
You want the "Subscription Mode" endpoints