Get the number of active fingers for a given touch device.
Defined in SDL_touch.h, but apps should only #include "SDL.h"
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int SDL_GetNumTouchFingers(SDL_TouchID touchID);
touchID | the ID of a touch device |
Returns the number of active fingers for a given touch device on success or 0 on failure; call SDL_GetError() for more information.
This function is available since SDL 2.0.0.
CategoryAPI, CategoryAPIFunction