SDL_WINDOWPOS_UNDEFINED - Used to indicate that you don't care what the window position/display is.

       This macro is available since SDL 3.2.0.

Simple Directmedia Layer                           SDL 3.2.20                         SDL_WINDOWPOS_UNDEFINED(3)

       This always uses the primary display.

       SDL_WINDOWPOS_UNDEFINED - Used to indicate that you don't care what the window position/display is.

#include<SDL3/SDL_video.h>#defineSDL_WINDOWPOS_UNDEFINEDSDL_WINDOWPOS_UNDEFINED_DISPLAY(0)