在Delphi的ShadowWnd单元中定义了一个TShadowWindow的类，这个类可以用来给人任意的可视化控件添加阴影效果，示意代码如下：

unit Unit1;

interface

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

type
TForm1 = class(TForm)
lbl1: TLabel;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure lbl1Click(Sender: TObject);
private
{ Private declarations }
FShadow:TShadowWindow;
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
FShadow := TShadowWindow.CreateShadow(lbl1, csRight);
FShadow.Control:=lbl1;
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
FShadow.Free;
end;

procedure TForm1.lbl1Click(Sender: TObject);
begin
if FShadow.Visible then
FShadow.Hide
else
FShadow.Show;
end;

end.