DOKK / manpages / debian 13 / libsdl3-doc / SDL_GetPrimaryDisplay.3.en
SDL_GetPrimaryDisplay(3) SDL3 FUNCTIONS SDL_GetPrimaryDisplay(3)

SDL_GetPrimaryDisplay - Return the primary display.

Defined in SDL3/SDL_video.h

#include "SDL3/SDL.h"
SDL_DisplayID SDL_GetPrimaryDisplay(void);

( SDL_DisplayID ) Returns the instance ID of the primary display 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.

(3), SDL_GetDisplays(3)

SDL 3.2.10 Simple Directmedia Layer