09-02-2020, 08:06 AM
To make only certain parts of the screen clickable create a Mouse Trigger with the "Position Trigger" property checked. Then specify the shape (RECTANGLE or ELLIPSE), location, width, and height of the desired region for the Mouse Trigger Property. The 'Within' property in the Mouse Trigger will determine if the experiment will advance when the participant clicks within (checked) or outside (unchecked) the specified region. The Mouse Trigger Example illustrates how to implement position-contingent Mouse Triggers.
It can be useful to link the location, width, and height of the triggering region to the location of a screen resource. That way, if the screen resource's position moves, the clickable region will also move.
Another very useful tip is to set an Interest Area as the triggering region. In this way, the location and width / height properties of the triggering region will be those of the Interest Area. Typically the Interest Area would be associated with the Display Screen Node that precedes the Mouse trigger. If there are multiple Interest Areas / Display Screen nodes you can choose which Display Screen the Interest Area is associated with, and which specific Interest Area associated with that node should be the triggering region.
It can be useful to link the location, width, and height of the triggering region to the location of a screen resource. That way, if the screen resource's position moves, the clickable region will also move.
Another very useful tip is to set an Interest Area as the triggering region. In this way, the location and width / height properties of the triggering region will be those of the Interest Area. Typically the Interest Area would be associated with the Display Screen Node that precedes the Mouse trigger. If there are multiple Interest Areas / Display Screen nodes you can choose which Display Screen the Interest Area is associated with, and which specific Interest Area associated with that node should be the triggering region.