A variable controlling the use of a sentinel event when polling the event queue.
Defined in <SDL3/SDL_hints.h>
#define SDL_HINT_POLL_SENTINEL "SDL_POLL_SENTINEL"
When polling for events, SDL_PumpEvents is used to gather new events from devices. If a device keeps producing new events between calls to SDL_PumpEvents, a poll loop will become stuck until the new events stop. This is most noticeable when moving a high frequency mouse.
The variable can be set to the following values:
This hint can be set anytime.
This hint is available since SDL 3.0.0.