Ubuntu Manpages

SDL_WINDOWPOS_ISUNDEFINED

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

#include <SDL3/SDL_video.h>
#define SDL_WINDOWPOS_ISUNDEFINED(X)    (((X)&0xFFFF0000) == SDL_WINDOWPOS_UNDEFINED_MASK)

the window position value.

This macro is available since SDL 3.2.0.

SDL_SetWindowPosition(3)