###### (This is the legacy documentation for stable SDL2, the current stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current development version.)
# SDL_hid_get_serial_number_string

Get The Serial Number String from a HID device.

## Header File

Defined in [SDL_hidapi.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_hidapi.h), but apps should _only_ `#include "SDL.h"`!

## Syntax

```c
int SDL_hid_get_serial_number_string(SDL_hid_device *dev, wchar_t *string, size_t maxlen);

```

## Function Parameters

|                |                                                               |
| -------------- | ------------------------------------------------------------- |
| **dev**        | A device handle returned from [SDL_hid_open](SDL_hid_open)(). |
| **string**     | A wide string buffer to put the data into.                    |
| **maxlen**     | The length of the buffer in multiples of wchar_t.             |

## Return Value

Returns 0 on success and -1 on error.

## Version

This function is available since SDL 2.0.18.

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[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction)