unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, 
  Controls, Forms, Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    ListLanguage: TListBox;
    buttQuery: TButton;
    procedure buttQueryClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.buttQueryClick(Sender: TObject);
var i:integer; msg:String;
begin
  Msg:='';
  for i:=0 to ListLanguage.Items.Count-1 do
     if ListLanguage.Selected[i] then
          Msg:=Msg+ chr(13)+ListLanguage.Items[i];

  Msg:='You have selected :'+Msg;
  ShowMessage(Msg);

end;

end.
