touchscreen events

kenmc

Hi,

I am setting up a task in OpenSesame with a touchscreen monitor and Windows 10. mouse.get_click() correctly registers a left-button-down event as button 1, but for the touchscreen it requires a double-tap (Psychopy backend) or a touch-off event (Pygame and Expyriment backends) to register button 1. I understand that in Windows, touch duration is often used to discriminate left and right buttons and events are therefore logged on touch-off, so I have disabled the Press-and-hold as right-click in the Windows control panel. (Windows recognises both touch-on and touch-off events identically to the left mouse button).

Can anyone advise how I can register touch-on events in OpenSesame? I saw an earlier post on this issue in the forum, but it was not clear whether the issue had been resolved.

many thanks, Ken 

sebastiaan

Hi @kenmc ,

It seems that PyGame now supports touch events. So that means that you could write a script that uses PyGame directly. However, this appears to require a version of PyGame that is compiled with SDL 2, and that is currently not the case with any of the regular OpenSesame packages. (I think.)

• https://www.pygame.org/docs/ref/event.html

You can check for yourself by entering the following in the console (debug window):

from pygame import locals
print(locals.FINGERDOWN)

For me that gives -1 , because this constant hasn't been defined. Long story short: This might be possible, but it will require a bit of figuring out!

Cheers,

Sebastiaan