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Determine the operating systems default language

The code below uses unit SysUtils to easily determine the Operating System's default language. The TLanguages class also contains other information for each entry - check the online help on this type. uses SysUtils, Dialogs; procedure TForm1.FormCreate(Sender: TObject); var i : Integer; begin i := Languages.IndexOf(SysLocale.DefaultLCID); ShowMessage(Languages.Name[i]); end;