# SDL_GetWindowID

Get the numeric ID of a window.

## Header File

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

## Syntax

```c
SDL_WindowID SDL_GetWindowID(SDL_Window *window);
```

## Function Parameters

|                            |            |                      |
| -------------------------- | ---------- | -------------------- |
| [SDL_Window](SDL_Window) * | **window** | the window to query. |

## Return Value

([SDL_WindowID](SDL_WindowID)) Returns the ID of the window on success or 0
on failure; call [SDL_GetError](SDL_GetError)() for more information.

## Remarks

The numeric ID is what [SDL_WindowEvent](SDL_WindowEvent) references, and
is necessary to map these events to specific [SDL_Window](SDL_Window)
objects.

## Thread Safety

This function should only be called on the main thread.

## Version

This function is available since SDL 3.2.0.

## See Also

- [SDL_GetWindowFromID](SDL_GetWindowFromID)

----
[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryVideo](CategoryVideo)

