ObjectARX 2017 SDK exposes class “AcLocale” using which language information of the AutoCAD can be retrieved. This “AcLocale” is new class in 2017.
#include "rxregsvc.h" void getLocal() { AcLocale locale = acrxProductLocale(); acutPrintf(locale.iso2LangName()); acutPrintf(locale.iso2CountryName()); }