приостановка программы

var i : integer;
...
For i := 1 to 100 do
  begin
  sleep(10);
  Application.processmessages;
  end;

i:=i+1;
if i=10 then
timer1.Enabled:=false;

procedure TForm1.Button1Click(Sender: TObject);
begin
For per1:=0 to 10 do
begin
i:=i+1;
sleep (1000);
end;
end;

unit Unit1;
 
interface
 
uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;
 
type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
i:real;
 
implementation
 
{$R *.dfm}
 
procedure TForm1.Button1Click(Sender: TObject);
begin
i:=i+1;
Label1.Caption:=floattostr(i);
end;
 
procedure TForm1.Button2Click(Sender: TObject);
begin
Sleep (5000);
Application.processmessages;
Showmessage ('121');
end;
 
procedure TForm1.FormCreate(Sender: TObject);
begin
  i:=1;
end;
 
end.