# SDL_NotificationID

This is a unique identifier for a system notification.

## Header File

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

## Syntax

```c
typedef Uint32 SDL_NotificationID;
```

## Remarks

The value 0 is an invalid notification ID.

## Version

This datatype is available since SDL 3.6.0.

----
[CategoryAPI](CategoryAPI), [CategoryAPIDatatype](CategoryAPIDatatype), [CategoryEvents](CategoryEvents)