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

NAME
SDL_Unsupported - A macro to standardize error reporting on unsupported operations.
SYNOPSIS
#include <SDL3/SDL_error.h>
#define SDL_Unsupported() SDL_SetError("That operation is not supported")
DESCRIPTION
This simply calls SDL_SetError() with a standardized error string, for convenience, consistency, and
clarity.
THREAD SAFETY
It is safe to call this macro from any thread.
AVAILABILITY
This macro is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_Unsupported(3)