What does this short code do?

Could someone explain me what does this code do?

Code:

unit XX;
interface

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

type
  TComponentList = class(TForm)
    ListBox1: TListBox;
    procedure ListBox1Click(Sender: TObject);
  private

  public

  end;

var
  ComponentList: TComponentList;

implementation

{$R *.DFM}

procedure TComponentList.ListBox1Click(Sender: TObject);
var
   i:Integer;
   MyName:string;
   MyObject:TObject;
begin
ListOfSelectedObjects.UnSelect; 

MyName:='';
for i:=0 to ListBox1.Items.Count-1 do
   if ListBox1.Selected[i] then MyName:=ListBox1.Items[i];
if MyName='' then ShowMessage('Greska : Ime nije pronadjeno);
MyObject:=GetObjectByName(MyName);
MyObject.Select;
MyObject.Draw;

end;

end.interface

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

type
  TComponentList = class(TForm)
    ListBox1: TListBox;
    procedure ListBox1Click(Sender: TObject);
  private

  public

  end;

var
  ComponentList: TComponentList;

implementation

{$R *.DFM}

procedure TComponentList.ListBox1Click(Sender: TObject);
var
   i:Integer;
   MyName:string;
   MyObject:TObject;
begin
ListOfSelectedObjects.UnSelect; 

MyName:='';
for i:=0 to ListBox1.Items.Count-1 do
   if ListBox1.Selected[i] then MyName:=ListBox1.Items[i];
if MyName='' then ShowMessage('Greska : Ime nije pronadjeno);
MyObject:=GetObjectByName(MyName);
MyObject.Select;
MyObject.Draw;

end;

end.