(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)

SDL_HINT_POLL_SENTINEL

A variable controlling the use of a sentinel event when polling the event queue

Header File

Defined in SDL_hints.h

Syntax

#define SDL_HINT_POLL_SENTINEL "SDL_POLL_SENTINEL"

Remarks

This variable can be set to the following values:

• "0": Disable poll sentinels
• "1": Enable poll sentinels

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.

By default, poll sentinels are enabled.

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CategoryAPI, CategoryAPIMacro

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