I'm no expert but...  maybe press-and-hold?

I'm sure this is obvious but since you didn't mention it...  did he
have right entry in his squeak.ini file?

On Fri, Aug 3, 2018 at 12:18 PM, Ron Teitelbaum <ron@usmedrec.com> wrote:
> Hi All,
>
> I just had a customer trying to use a new Windows Tablet computer (with and
> without tablet mode on) trying to execute a Right-Click in our software
> (Immersive Terf - Squeak 4.1).  He is not using a mouse instead he tried
> using the touchscreen two finger and touchpad two fingers and tried pressing
> the right mouse button area on the touchpad.  All of these things didn't
> work.  He reports that it works fine on other windows applications.
>
> I've asked him to get a mouse and try with that (figuring that a mouse
> driver may fix the problem).  I'll see if I can work with him to capture the
> mouse events.
>
> My question is has anyone ever seen this before?  Is this something new from
> Microsoft?  Did event encoding change for trackpads and touch screens?  (All
> of this appears to work fine on my computer two-finger trackpad).
> Suggestions are welcome!
>
> Thanks!
>
> All the best,
>
> Ron Teitelbaum
>
>
>