@Peter
v0.1.1 is up on deken: https://deken.puredata.info/results.html?name=hidraw
Thank you for your quick response, fix and deken upload, Lucas!
The problem is still there with the current hidraw v0.1.1 and hidapi v0.14.0 on Linux that is, the same message (mouse wheel scroll down or up) does not get output (checked with print) unless I move the mouse one pixel in between.
Thanks again! Peter