SDL_WaitEvent - Man Page

#include <SDL3/SDL_events.h>

bool SDL_WaitEvent(SDL_Event *event);

If event is not NULL, the next event is removed from the queue and stored in the SDL_Event structure pointed to by event.

As this function may implicitly call SDL_PumpEvents(), you can only call this function in the thread that initialized the video subsystem.

event

the SDL_Event structure to be filled in with the next event from the queue, or NULL.

for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.

SDL_PollEvent(3), SDL_PushEvent(3), SDL_WaitEventTimeout(3)

SDL_GetWindowFromEvent(3), SDL_PollEvent(3), SDL_PumpEvents(3), SDL_WaitEventTimeout(3).