WHile stopping it with an X is nice.. the actual request everyone has is how to disable it from ever appearing.
Overall I think Microsoft has a driver problem in windows 10 with mice and trackpads that they don't recognize or choose to ignore. Random movements of a mouse or finger over a trackpad can trigger either task view to appear or the right click pestilence to appear... with read aloud and all the other options.
This problem only appeared in windows 10. in 20 years of Microsoft usage never had nonsense like this.. not in w7, not in wXP, not in w2000.
Someone frpm Microsoft suggested this was a hardware incompatibility on my computer.. which is nonsense because we have 3 different brands here and 8 different machines and they will all do it sooner or later... as soon as you upgrade to windows 10.