Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_SetAssertionHandler - Set an application-defined assertion handler.
HEADER FILE
Defined in SDL3/SDL_assert.h
SYNOPSIS
#include "SDL3/SDL.h"
void SDL_SetAssertionHandler(
SDL_AssertionHandler handler,
void *userdata);
DESCRIPTION
This function allows an application to show its own assertion UI and/or force the response to an
assertion failure. If the application doesn't provide this, SDL will try to do the right thing, popping
up a system-specific GUI dialog, and probably minimizing any fullscreen windows.
This callback may fire from any thread, but it runs wrapped in a mutex, so it will only fire from one
thread at a time.
This callback is NOT reset to SDL's internal handler upon
SDL_Quit ()!
FUNCTION PARAMETERS
handler
the SDL_AssertionHandler
function to call when an assertion fails or NULL for the default handler.
userdata
a pointer that is passed to handler .
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_GetAssertionHandler(3)
Simple Directmedia Layer SDL 3.2.8 SDL_SetAssertionHandler(3)