[solved] Pointer resetting to center of screen
Hello,
I have a multiple choice form running through a loop (within a larger loop). After clicking the button to move to the next question, the pointer sometimes resets to the center of the screen. I'm concerned this might cause participants to be frustrated, which would be problematic given these questions are emotion-related. Any idea why this might be or how to fix this?
Thanks.
Comments
Hi,
This sometimes happens (I'm not sure why), when using the xpyriment back-end in fullscreen. The easiest way around this is probably to switch to the legacy back-end, unless you have a specific reason not to. This will also make the forms run more smoothly.
Does that answer your question?
Cheers,
Sebastiaan
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Hi Sebastiaan,
I'm already using the legacy back-end. Any other ideas?
Thanks!
Hi,
Really? In that case you could see what happens when you change the canvas back-end settings (in the General tab under Back-end settings). For example, what happens if you set Double buffering to yes, and/ or Hardware surface to no?
And this problem only occurs when running full screen, probably, is that right?
Cheers,
Sebastiaan
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This problem still occurs when Double buffering is set to yes and Hardware surface is set to no. And yes, this problem only occurs when running full screen. Any other settings you'd recommend changing?
Thanks.
To clarify, changing Hardware surface to 'no' does appear to reduce the frequency with which the pointer resets to center, but it still occurs.
Thanks.
Well, if the problem doesn't occur in window mode, you could run your experiment in a window that covers the entire screen. You can do that by:
Then, if you run the experiment in a window, it will look like it's full screen, even though it's sneakily being a window.
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Thanks! This works!