(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_PumpEvents

Pump the event loop, gathering events from the input devices.

Header File

Syntax

void SDL_PumpEvents(void);

Remarks

This function updates the event queue and internal input device state.

SDL_PumpEvents() gathers all the pending input information from devices and places it in the event queue. Without calls to SDL_PumpEvents() no events would ever be placed on the queue. Often the need for calls to SDL_PumpEvents() is hidden from the user since SDL_PollEvent() and SDL_WaitEvent() implicitly call SDL_PumpEvents(). However, if you are not polling or waiting for events (e.g. you are filtering them), then you must call SDL_PumpEvents() to force an event queue update.

Thread Safety

This function should only be called on the main thread.

Version

This function is available since SDL 3.1.3.