Image in Background (Sketchpad)
I'm trying to create an experiment with a mouse response on ROI. My ROI are rect which change position on the sketchpad. Now I want to include an image in the background and make my ROI transparent, so it looks like the participants are clicking on the background image but are actually clicking on my ROI. Anyhow when I put the image in the background I am not able to click on my ROI and get a correct response, even when I put the image in the background (z_index=1) it still does not except clicks on the ROI.
How can I put an image in the background that is not clickable but just there (for every trial)?
Thanks in advance!