Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_SetX11EventHook - Set a callback for every X11 event.
SYNOPSIS
#include <SDL3/SDL_system.h>
void SDL_SetX11EventHook(SDL_X11EventHook callback, void *userdata);
DESCRIPTION
The callback may modify the event, and should return true if the event should continue to be processed,
or false to prevent further processing.
FUNCTION PARAMETERS
callback
the SDL_X11EventHook function to call.
userdata
a pointer to pass to every iteration of callback.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_SetX11EventHook(3)