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PrecisionThreeFingerDrag

This simple AutoIt script uses the RawInput API to read DIGITIZER - TOUCH PAD input reports and the SendInput API to send mouse motion and clicks.

NOTE: only tested on Microsoft Surface touchpads, it currently assumes a hard-coded struct format that I reverse-engneered by experimenting with RawInputViewer

Instructions

  1. Download AutoIt from https://autoitscript.com
  2. Run script with AutoIt by dragging finger.au3 over onto AutoIt3_x64.exe

Dependency

This does not use any UDFs, script and API calls are entirely self-contained. Only the AutoIt executable is needed.

To-Do

  • Add compatibility checks for present trackpads on startup (needs to report at least three fingers)
  • Use HidP-* winapi calls to parse the raw data strings