unit Unit1;

interface

uses
  Windows,ShellAPI, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls,Menus,ExtCtrls;
const
  ICON_ID= 1;
  MI_ICONEVENT= WM_USER+ 1;
type
  TForm1 = class(TForm)
    Button1: TButton;
    PopupMenu1: TPopupMenu;
    N11: TMenuItem;
    N21: TMenuItem;
    N31: TMenuItem;
    procedure FormCreate(Sender: TObject);

  private
    procedure SetupIcon;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  NormalIcon, DisabledIcon: TIcon; //正常和失效情況下的圖標
  Status: Boolean; //標志是“使用狀態”還是“禁用狀態”
  Apath: String;
implementation

{$R *.dfm}
procedure TForm1.SetupIcon;
var
  IconData: TNotifyIcondata;
begin
  NormalIcon:= TIcon.Create;
  DisabledIcon:= TIcon.Create;
  NormalIcon.LoadFromFile(Apath+ '1.ico');
  DisabledIcon.LoadFromFile(Apath+ '2.ico');
  IconData.cbSize:= SizeOf(IconData);
  IconData.Wnd:= Handle;
  IconData.uID:= Icon_ID;
  IconData.uFlags:= NIF_ICON or NIF_MESSAGE or NIF_TIP;
  IconData.uCallbackMessage:= MI_ICONEVENT;
  IconData.hIcon:= NormalIcon.Handle;
  IconData.szTip:= '新增托盤圖標';
  Shell_NotifyIcon(NIM_ADD, @IconData);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
  Apath:= ExtractFilePath(ParamStr(0));
  Status:= True;
  SetupIcon;
 // ChangeIcon(True);
  ShowWindow(Application.Handle, SW_HIDE);
  SetWindowLong(Application.Handle, GWL_EXSTYLE, WS_EX_TOOLWINDOW);
end;

end.