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

NAME
SDL_MainThreadCallback - Callback run on the main thread.
HEADER FILE
Defined in SDL3/SDL_init.h
SYNOPSIS
#include "SDL3/SDL.h" typedef void (SDLCALL *SDL_MainThreadCallback)(void *userdata);
FUNCTION PARAMETERS
userdata an app-controlled pointer that is passed to the callback.
AVAILABILITY
This datatype is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_RunOnMainThread(3) Simple Directmedia Layer SDL 3.2.8 SDL_MainThreadCallback(3type)