type
  TForm1 = class(TForm)
    Button1: TButton;
    Panel1: TPanel;
    Edit1: TEdit;
    procedure FormActivate(Sender: TObject);
  private
    { Private declarations }
  public
    procedure DisplayHint(Sender: TObject);
  end;

implementation

{$R *.DFM}

procedure TForm1.DisplayHint(Sender: TObject);
begin
  Panel1.Caption := Application.Hint;
end;

procedure TForm1.FormActivate(Sender: TObject);
begin
  Application.OnHint := DisplayHint;

end;