How to get the data of pen and touch silmultaneously on touchscreens?

[ZayneHuang]

Problem: I am excited to know that it is possible to get simultaneous pen and touch data on touchscreens through the validation document: https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/simultaneous-pen-and-touch-validation. But I am suffering from obtaining the data under WPF framework on Surface devices. I wonder how DigiInfo gets the data?

Solution: I would like to request a more detailed document or tips on how to get the data since it is still unclear for me to get it.

Alternatives considered:

1. I have tried to use raw events like TouchMove and MouseMove, but it would not fire events when pen or finger has already on the screen.
2. I have tried to use other events like StylusMove and so on, but don't work either.
3. I have tried WndProc, but it is hard for me to split the two signals because the wParam is either 0 or 1 whenever it is pen or finger interacting on the screen.

I just wonder how DigiInfo get the data and how I can get the similar data in WPF framework with Surface devices? Thanks in advance!

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[ZayneHuang]

Hi,

How is everything going? Looking forward to your reply~ Thanks