I was facing the problem that multitouch is not yet supported on Haiku and my laptop touchpad doesn’t have physical buttons. That meant that I have been living for a while without right click.
Inspired by the fact that on Tracker it was possible to open the right click menu also by performing CTRL+CLICK, I made GitHub - amol-/haiku_rclick_filter: Input Filter for Haiku that turns CTRL+CLICK to a right click. Helpful for touchpads missing right click.
The filter can be easily installed by running
make install and it will immediately allow to use CTRL+click everywhere to simulate a right click. (When installing, sometimes the system becomes unstable due to the restart of input_server, but after rebooting once it goes back to being stable).
I share it here hoping it can be helpful to other people too.