###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!)
# SDL_GetJoystickInstanceGUID

Get the implementation-dependent GUID of a joystick.

## Syntax

```c
SDL_JoystickGUID SDL_GetJoystickInstanceGUID(SDL_JoystickID instance_id);

```

## Function Parameters

|                     |                          |
| ------------------- | ------------------------ |
| **instance_id**     | the joystick instance ID |

## Return Value

Returns the GUID of the selected joystick. If called on an invalid index,
this function returns a zero GUID

## Remarks

This can be called before any joysticks are opened.

## Version

This function is available since SDL 3.0.0.

## Related Functions

* [SDL_GetJoystickGUID](SDL_GetJoystickGUID)
* [SDL_GetJoystickGUIDString](SDL_GetJoystickGUIDString)

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[CategoryAPI](CategoryAPI)