How to add multi-button or multi-key

Dear,

I want add multi-key or multi-button in my program, but I can't seem to find relevant commands to implement this functionality.

When using eye-tracking as input, multi-target selection works well through the 'multitarget' command. However, 'multitarget' only supports X,Y coordinate data. For keyboard (keyinput) or button inputs, there doesn't appear to be an equivalent command. Could you advise if there's a way to implement multi-target keypress programs? (e.g., allowing subjects to press any of keys 1/2/3/4 during the response period)



Thank you.

Just declare multiple KeyCheckers or SingleButtons. Combine them with aggregators, if necessary.