SDL_GetCurrentDisplayMode - Get information about the current display mode.

       This function is available since SDL 3.2.0.

       There's  a  difference between this function and SDL_GetDesktopDisplayMode() when SDL runs fullscreen and
       has changed the resolution. In that case this function will return the current display mode, and not  the
       previous native display mode.

displayID
              the instance ID of the display to query.

       SDL_GetCurrentDisplayMode - Get information about the current display mode.

       Returns  a  pointer  to  the  desktop  display  mode  or  NULL  on  failure; call SDL_GetError() for more
       information.

SDL_GetDesktopDisplayMode(3), SDL_GetDisplays(3)

Simple Directmedia Layer                           SDL 3.2.20                       SDL_GetCurrentDisplayMode(3)

#include<SDL3/SDL_video.h>constSDL_DisplayMode*SDL_GetCurrentDisplayMode(SDL_DisplayIDdisplayID);

       This function should only be called on the main thread.