# SDL_PEN_TOUCHID

The [SDL_TouchID](SDL_TouchID) for touch events simulated with pen input.

## Header File

Defined in [<SDL3/SDL_pen.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_pen.h)

## Syntax

```c
#define SDL_PEN_TOUCHID ((SDL_TouchID)-2)
```

## Version

This macro is available since SDL 3.2.0.

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[CategoryAPI](CategoryAPI), [CategoryAPIMacro](CategoryAPIMacro), [CategoryPen](CategoryPen)