Okay, maybe I only hold the power button for ~15s instead of 20. (didn't work)
I'll have to test it again later.
(Edit: Okay this time it worked. before it did not. no idea.)
Well, my app only expects a few touches, so my (stupid) idea was to count the touchscreen activity inside the grabber, and quit after processing a certain amount of data. So you can get out of it by drawing a few circles on the touchscreen.
Hummm, well, it only got stuck because of a bug so I could simply pretend it won't happen again.
Last edited by frostschutz; 10-24-2018 at 02:08 PM.
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