SDL_GetWindowID - Man Page

#include <SDL3/SDL_video.h>

SDL_WindowID SDL_GetWindowID(SDL_Window *window);

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.

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

This function should only be called on the main thread.

This function is available since SDL 3.2.0.

SDL_GetWindowFromID(3)

SDL_GetWindowFromID(3).