Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_IsDeXMode - Query if the application is running on a Samsung DeX docking station.
SYNOPSIS
#include <SDL3/SDL_system.h>
bool SDL_IsDeXMode(void);
RETURN VALUE
Returns true if this is a DeX docking station, false otherwise.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_IsDeXMode(3)