SDL_WINDOWPOS_ISUNDEFINED - Man Page

A macro to test if the window position is marked as "undefined."

Header File

Defined in SDL3/SDL_video.h

#include "SDL3/SDL.h"

#define SDL_WINDOWPOS_ISUNDEFINED(X)    (((X)&0xFFFF0000) == SDL_WINDOWPOS_UNDEFINED_MASK)

This macro is available since SDL 3.2.0.

SDL 3.2.2 Simple Directmedia Layer SDL3 FUNCTIONS