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Editorial Team
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Asked: 2026-05-29T20:36:16+00:00

I need to convert some 2-letter (neutral) identifiers (like en for English) so something

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I need to convert some 2-letter (neutral) identifiers (like en for English) so something more friendly for user, like English.

Is there an Api that does that using Win32 ? So far I have found only LCID family of functions that doesn’t help.

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1 Answer

  1. Editorial Team

    You’re looking for IsValidLocaleName, GetLocaleInfoEx and LOCALE_SLANGUAGE / LOCALE_SLOCALIZEDLANGUAGENAME / LOCALE_SENGLISHLANGUAGENAME, which are defined in WinNls.h as:

    #define LOCALE_SLOCALIZEDDISPLAYNAME  0x00000002   // localized name of locale, eg "German (Germany)" in UI language
#if (WINVER >= _WIN32_WINNT_VISTA)
#define LOCALE_SLOCALIZEDLANGUAGENAME 0x0000006f   // Language Display Name for a language, eg "German" in UI language
#endif //(WINVER >= _WIN32_WINNT_VISTA)
#define LOCALE_SENGLISHLANGUAGENAME   0x00001001   // English name of language, eg "German"
#define LOCALE_SNATIVELANGUAGENAME    0x00000004   // native name of language, eg "Deutsch"

    (depending on OS version and your requirements).

    Note: XP only uses LCID‘s

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