SDL_GetDisplayBounds

Get the desktop area represented by a display.

Header File

int SDL_GetDisplayBounds(SDL_DisplayID displayID, SDL_Rect *rect);

displayID	the instance ID of the display to query
rect	the SDL_Rect structure filled in with the display bounds

Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

The primary display is always located at (0,0).

This function is available since SDL 3.0.0.

SDL_Rect r;
if (SDL_GetDisplayBounds(0, &r) != 0) {
    SDL_Log("SDL_GetDisplayBounds failed: %s", SDL_GetError());
    return 1;
}