Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_GetDesktopDisplayMode - Get information about the desktop's display mode.
HEADER FILE
Defined in SDL3/SDL_video.h
SYNOPSIS
#include "SDL3/SDL.h" const SDL_DisplayMode * SDL_GetDesktopDisplayMode(SDL_DisplayID displayID);
DESCRIPTION
There's a difference between this function and SDL_GetCurrentDisplayMode () when SDL runs fullscreen and has changed the resolution. In that case this function will return the previous native display mode, and not the current display mode.
FUNCTION PARAMETERS
displayID the instance ID of the display to query.
RETURN VALUE
(const SDL_DisplayMode *) Returns a pointer to the desktop display mode or NULL on failure; call SDL_GetError () for more information.
THREAD SAFETY
This function should only be called on the main thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_GetCurrentDisplayMode(3), •(3), SDL_GetDisplays(3) Simple Directmedia Layer SDL 3.2.8 SDL_GetDesktopDisplayMode(3)