TouchScreenButtonBox usage

[Christophe Pallier]

 Hello,

I am trying to use a TouchScreenButtonBox object.

I am not entirely sure about how to use it.

I tried the code below (see also full script attached), but it blocks on `BB.wait()`, apparently not detecting when I touch any of the picture. What am I doing wrong?

---

img1 =  expyriment.stimuli.Picture("no2.jpg", position=(-200, 100))
img2 =  expyriment.stimuli.Picture("yes2.jpg", position=(200, 100))

BB = expyriment.io.TouchScreenButtonBox([img1, img2])

expyriment.control.start()

img1.present(clear=True, update=False)
img2.present(clear=False, update=True)
button, resptime = BB.wait()
---

[Florian Krause]

Hi Christophe,

you have to call BB.create() and BB.show() before BB.wait().

Best,

Florian

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[Christophe Pallier]

THANKS!

Now the following code indeed works:

---
img1 = expyriment.stimuli.Picture("no2.jpg", position=(-200, 100))
img2 = expyriment.stimuli.Picture("yes2.jpg", position=(200, 100))

BB = expyriment.io.TouchScreenButtonBox([img1, img2])

BB.create()

expyriment.control.start()

BB.show()
img, resptime = BB.wait()
exp.screen.clear()
exp.screen.update()

exp.clock.wait(2000)
---

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Christophe Pallier <chris...@pallier.org>

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