NtQueryInstallUILanguage

NTSTATUS __stdcall NtQueryInstallUILanguage(UINT16 *InstallUILanguageId){
  __int64 v2; 

  if( KeGetCurrentThread()->PreviousMode )
  {
    v2 = 0x7FFFFFFF0000i64;
    if( (unsigned __int64)InstallUILanguageId < 0x7FFFFFFF0000i64 )
      v2 = (__int64)InstallUILanguageId;
    *(_WORD *)v2 = *(_WORD *)v2;
  }
  *InstallUILanguageId = PsInstallUILanguageId;
  return 0;
}

Referenced by:

ExpSetPendingUILanguage
NtQueryDefaultUILanguage
RtlpMuiRegPopulateBaseLanguages
RtlpMuiRegValidateInstalled