Is there any gesture message I can handle when my app is displayed on iPad using sidecar?

Using iMac pro and iPad pro here.


I have already successfully set up sidecar connections and have no trouble playing around in my app using Apple Pencil. But it seems there is no messages / events I can handle when I touch or perform gestures on iPad.


I've tried with touchXXX, but it's not responsive to my touches.


Any idea?