unit Unit1;

interface

uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;

type

  TForm1 = class(TForm)

    Memo1: TMemo;

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    Button4: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

    procedure Button4Click(Sender: TObject);

  end;

var

  Form1: TForm1;

implementation

{$R *.dfm}

//获取系统支持的语言列表
procedure TForm1.Button1Click(Sender: TObject);
var

  i: Integer;
begin

  Memo1.Clear;

  for i :=  to Languages.Count -  do

    Memo1.Lines.Add(Format('%d: %s', [i, Languages.Name[i]]));
end;

//获取系统支持语言的 Ext 列表
procedure TForm1.Button2Click(Sender: TObject);
var

  i: Integer;
begin

  Memo1.Clear;

  for i :=  to Languages.Count -  do

    Memo1.Lines.Add(Languages.Ext[i] + #9 + Languages.Name[i]);
end;

//系统默认的语言 ID 和在语言列表中的排序
procedure TForm1.Button3Click(Sender: TObject);
var

  LangID: Word;

  N: Integer;
begin

  LangID := GetUserDefaultLangID;

  N := Languages.IndexOf(LangID);

  ShowMessageFmt('当前语言ID: %d; 在列表中的排序: %d', [LangID, N]);

  {当前语言ID: 2052; 在列表中67的排序: %d}
end;

//其他
procedure TForm1.Button4Click(Sender: TObject);
var

  s: string;
begin

  ShowMessage(Languages.ID[]);                  //$00000804

  ShowMessage(IntToStr(Languages.LocaleID[]));  //2052

  ShowMessage(Languages.NameFromLCID['2052']);    //中文(中国)

  ShowMessage(Languages.NameFromLocaleID[]);  //中文(中国)

  ShowMessage(GetUILanguages()); // zh-CN,zh-Hans,zh

  ShowMessage(PreferredUILanguages); // ZH-CN,ZH-HANS,ZH

  for s in PreferredUILanguageList do ShowMessage(s); //ZH-CN ...
end;

end.