SDL_GetWindowID - Get the numeric ID of a window.

       This function is available since SDL 3.2.0.

       The  numeric  ID  is  what  SDL_WindowEvent  references, and is necessary to map these events to specific
       SDL_Window objects.

window the window to query.

       SDL_GetWindowID - Get the numeric ID of a window.

       Returns the ID of the window on success or 0 on failure; call SDL_GetError() for more information.

SDL_GetWindowFromID(3)

Simple Directmedia Layer                           SDL 3.2.20                                 SDL_GetWindowID(3)

#include<SDL3/SDL_video.h>SDL_WindowIDSDL_GetWindowID(SDL_Window*window);

       This function should only be called on the main thread.