网页弹出对话框,禁止自动弹出网页

unit Unit1;

interface

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

type     wb1: TWebBrowser;
    procedure FormCreate(Sender: TObject);
  private
    procedure WMActivate(var Msg: TWMActivate);message WM_ACTIVATE;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure  TForm1.WMActivate(var   Msg:   TWMActivate);
var
    S:String;
    wnd:HWND;
    I:Integer;
begin
  If Msg.Active=0 then
  begin
    wnd := Msg.ActiveWindow;
    I := GetWindowTextLength(wnd);
    SetLength(S,I+1);
    //the   text   of   the   specified   window 's   title   bar
    GetWindowText(Wnd, PChar(S),I+1);
    If Pos( '来自网页的消息', S) > 0 then
    Sendmessage(wnd,WM_CLOSE,0,0);
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  wb1.Navigate('file://C:Documents and SettingsAdministratorljdfbxindex.htm');
end;

end.