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

Associate an arbitrary named pointer with a window.

## Header File

Defined in [SDL_video.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_video.h)

## Syntax

```c
void* SDL_SetWindowData(SDL_Window * window,
                        const char *name,
                        void *userdata);

```

## Function Parameters

|                  |                                          |
| ---------------- | ---------------------------------------- |
| **window**       | the window to associate with the pointer |
| **name**         | the name of the pointer                  |
| **userdata**     | the associated pointer                   |

## Return Value

Returns the previous value associated with `name`.

## Remarks

`name` is case-sensitive.

## Version

This function is available since SDL 2.0.0.

## See Also

* [SDL_GetWindowData](SDL_GetWindowData)

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