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Suppose host has some three-finger gesture. Then we get the following sequence of events: DOWN-DOWN-DOWN-MOTION-CANCEL Note that there is no UP in this sequence. So if we don't handle CANCEL then we end up thinking that fingers are still touching the screen. Ideally we should inform the application that cancel has happened as not to trigger spurious taps but still this is way better than being stuck with phantom finger touch.
Simple DirectMedia Layer (SDL) Version 2.0
Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. It is used by video playback software, emulators, and popular games including Valve's award winning catalog and many Humble Bundle games.
More extensive documentation is available in the docs directory, starting with README.md
Enjoy!
Sam Lantinga (slouken@libsdl.org)
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