源码下载:
http://www.cnitblog.com/Files/shuyezi122/webbrowser做网页浏览.rar

下面是所有代码

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls, ImgList, OleCtrls, SHDocVw, StdCtrls, ExtCtrls,
  ToolWin;

type
  TForm1 = class(TForm)
    ToolBar1: TToolBar;
    Panel1: TPanel;
    Edit1: TEdit;
    Button9: TButton;
    WebBrowser1: TWebBrowser;
    ImageList1: TImageList;
    ToolButton1: TToolButton;
    ToolButton2: TToolButton;
    ToolButton4: TToolButton;
    ToolButton5: TToolButton;
    ToolButton6: TToolButton;
    ToolButton8: TToolButton;
    ToolButton9: TToolButton;
    ToolButton3: TToolButton;
    Label1: TLabel;
    StatusBar1: TStatusBar;
    Timer1: TTimer;
    procedure ToolButton8Click(Sender: TObject);
    procedure Button9Click(Sender: TObject);
    procedure ToolButton1Click(Sender: TObject);
    procedure ToolButton4Click(Sender: TObject);
    procedure ToolButton5Click(Sender: TObject);
    procedure ToolButton6Click(Sender: TObject);
    procedure WebBrowser1DownloadBegin(Sender: TObject);
    procedure WebBrowser1DownloadComplete(Sender: TObject);
    procedure WebBrowser1NewWindow2(Sender: TObject; var ppDisp: IDispatch;
      var Cancel: WordBool);
    procedure WebBrowser1StatusTextChange(Sender: TObject;
      const Text: WideString);
    procedure Timer1Timer(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure ToolButton2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  nurl:string;

implementation

{$R *.dfm}

procedure TForm1.ToolButton8Click(Sender: TObject);
begin
close;
end;

procedure TForm1.Button9Click(Sender: TObject);
begin
webbrowser1.Navigate(edit1.Text);\\打开网页
end;

procedure TForm1.ToolButton1Click(Sender: TObject);
begin
try
webbrowser1.GoBack;\\返回
except
showmessage('没有记录了');
exit;
end;
end;

procedure TForm1.ToolButton4Click(Sender: TObject);
begin
webbrowser1.Stop;\\停止
end;

procedure TForm1.ToolButton5Click(Sender: TObject);
begin
webbrowser1.Refresh;\\刷新
end;

procedure TForm1.ToolButton6Click(Sender: TObject);
begin
webbrowser1.GoHome;
end;

procedure TForm1.WebBrowser1DownloadBegin(Sender: TObject);
begin
statusbar1.Panels[0].Text:='正在打开'+edit1.Text;
end;

procedure TForm1.WebBrowser1DownloadComplete(Sender: TObject);
begin
statusbar1.Panels[0].Text:='完毕';
end;

procedure TForm1.WebBrowser1NewWindow2(Sender: TObject;
  var ppDisp: IDispatch; var Cancel: WordBool);
begin
Cancel:=true;
WebBrowser1.Navigate (nurl);\\在你自己应用程序中打开网页超连接,nurl来自下面
end;

procedure TForm1.WebBrowser1StatusTextChange(Sender: TObject;
  const Text: WideString);
begin
nurl:=text;\\得到连接地址,给上面函数用
end;

procedure TForm1.Timer1Timer(Sender: TObject);
begin
statusbar1.Panels[1].Text:=timetostr(now);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
statusbar1.Panels[2].Text:='元旦快乐';\\今天元旦,送自己的礼物
end;

procedure TForm1.ToolButton2Click(Sender: TObject);
begin
try
webbrowser1.GoForward ;
except
 showmessage('没有记录了');
exit;
end;
end;
end.

得到webbrowser内网页源码
var
myitem:Olevariant;
begin
    myitem := WebBrowser1.Document;
    memo1.Lines.add(myitem.all.item(0).outerhtml);
end;