unit dy219;

interface

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

type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
  private
    procedure sysmenu(var msg: twmmenuselect);message wm_syscommand;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var
  i: integer;
begin
  i := getsystemmenu(handle,false);
  appendmenu(i,mf_separator,0,nil);
  appendmenu(i,mf_string,100,'我的菜單(&E)');

end;

procedure TForm1.sysmenu(var msg: twmmenuselect);
begin
  if msg.IDItem = 100 then
    showmessage('您選擇了自己添加的菜單！')
  else
    inherited;
end;

end.