###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_WaitEvent Wait indefinitely for the next available event. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_events.h) ## Syntax ```c bool SDL_WaitEvent(SDL_Event *event); ``` ## Function Parameters | | | | | ------------------------ | --------- | ------------------------------------------------------------------------------------------------- | | [SDL_Event](SDL_Event) * | **event** | the [SDL_Event](SDL_Event) structure to be filled in with the next event from the queue, or NULL. | ## Return Value (bool) Returns true on success or false if there was an error while waiting for events; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks If `event` is not NULL, the next event is removed from the queue and stored in the [SDL_Event](SDL_Event) structure pointed to by `event`. As this function may implicitly call [SDL_PumpEvents](SDL_PumpEvents)(), you can only call this function in the thread that initialized the video subsystem. ## Thread Safety This function should only be called on the main thread. ## Version This function is available since SDL 3.1.3. ## See Also - [SDL_PollEvent](SDL_PollEvent) - [SDL_PushEvent](SDL_PushEvent) - [SDL_WaitEventTimeout](SDL_WaitEventTimeout) ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryEvents](CategoryEvents)