[ecfisa]

Hola.

Agrego el código previniendo el posible borrado del adjunto por falta de espacio (o descuido... )

Código Delphi [-]
unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, Grids, Buttons;

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    Button7: TButton;
    procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure FormShow(Sender: TObject);
  private
  public
  end;

var
  Form1: TForm1;

implementation {$R *.dfm}

procedure TForm1.FormShow(Sender: TObject);
begin
  with Panel1 do
  begin
    BevelOuter := bvNone;
    BevelInner := bvNone;
    BorderStyle:= bsNone;
    Ctl3D      := False;
    Visible    := False;
  end;
end;

procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
  if X >= ClientWidth - 10 then
   AnimateWindow(Panel1.Handle, 300, AW_ACTIVATE + AW_SLIDE + AW_HOR_NEGATIVE)
  else
   AnimateWindow(Panel1.Handle, 300, AW_HIDE + AW_SLIDE + AW_HOR_POSITIVE);
end;

end.

Saludos