Provided by: libsdl3-doc_3.2.28+ds-1_all 

NAME
SDL_GetDisplays - Get a list of currently connected displays.
SYNOPSIS
#include <SDL3/SDL_video.h>
SDL_DisplayID * SDL_GetDisplays(int *count);
FUNCTION PARAMETERS
count a pointer filled in with the number of displays returned, may be NULL.
RETURN VALUE
Returns a 0 terminated array of display instance IDs or NULL on failure; call SDL_GetError() for more
information. This should be freed with SDL_free() when it is no longer needed.
THREAD SAFETY
This function should only be called on the main thread.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.28 SDL_GetDisplays(3)