###### (This is the legacy documentation for SDL2, the previous stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current stable version.) # SDL_GetNumTouchFingers Get the number of active fingers for a given touch device. ## Header File Defined in [SDL_touch.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_touch.h) ## Syntax ```c int SDL_GetNumTouchFingers(SDL_TouchID touchID); ``` ## Function Parameters | | | | | -------------------------- | ----------- | ------------------------- | | [SDL_TouchID](SDL_TouchID) | **touchID** | the ID of a touch device. | ## Return Value (int) Returns the number of active fingers for a given touch device on success or 0 on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Version This function is available since SDL 2.0.0. ## See Also - [SDL_GetTouchFinger](SDL_GetTouchFinger) ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryTouch](CategoryTouch)