SDL_FingerID.3type - Man Page

Defined in SDL3/SDL_touch.h

#include "SDL3/SDL.h"

typedef Uint64 SDL_FingerID;

This ID is valid for the time the finger (stylus, etc) is touching and will be unique for all fingers currently in contact, so this ID tracks the lifetime of a single continuous touch. This value may represent an index, a pointer, or some other unique ID, depending on the platform.

The value 0 is an invalid ID.

This datatype is available since SDL 3.2.0.