是图片!<br>下面这个程序可以(出处不记得了):<br><br>unit UChangeStartBtn;<br><br>interface<br><br>uses<br> Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,<br> StdCtrls;<br><br>type<br> TForm1 = class(TForm)<br> Label1: TLabel;<br> procedure FormCreate(Sender: TObject);<br> procedure FormDestroy(Sender: TObject);<br> private<br> { Private declarations }<br> public<br> { Public declarations }<br> end;<br><br>var<br> Form1: TForm1;<br> StartButton: hWnd;<br> OldBitmap: THandle;<br> NewImage: TPicture; <br><br>implementation<br><br>{$R *.DFM}<br><br>procedure TForm1.FormCreate(Sender: TObject);<br>begin<br> NewImage := TPicture.create;<br> NewImage.LoadFromFile('C:/Windows/Circles.BMP');<br> StartButton := FindWindowEx(FindWindow('Shell_TrayWnd', nil), 0, 'Button', nil);<br> OldBitmap := SendMessage(StartButton, BM_SetImage, 0, NewImage.Bitmap.Handle);<br>end;<br><br>procedure TForm1.FormDestroy(Sender: TObject);<br>begin<br> SendMessage(StartButton,BM_SetImage,0,OldBitmap);<br> NewImage.Free;<br>end;<br><br>end.<br><br><br><br><br>