@setlocal
@echo off
set ConA=%@fileopen[con:,r]
set STD_OUTPUT_HANDLE=%@convert[16,10,FFFFFFF5???]
set STD_INPUT_HANDLE=%@convert[16,10,FFFFFFF6???]
echo STD_OUTPUT_HANDLE: %STD_OUTPUT_HANDLE
echo STD_INPUT_HANDLE: %STD_INPUT_HANDLE
set ConAA=%@winapi[kernel32.dll,GetStdHandle,%STD_OUTPUT_HANDLE]
echo Using @fileopen: %ConA
echo Using GetStdHandle: %ConAA
@endlocal