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

NAME
SDL_GetDesktopDisplayMode - Get information about the desktop's display mode.
SYNOPSIS
#include <SDL3/SDL_video.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
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
SDL_GetCurrentDisplayMode(3), SDL_GetDisplays(3)
Simple Directmedia Layer SDL 3.2.28 SDL_GetDesktopDisplayMode(3)