using System;

using System.Windows.Forms;

using System.Runtime.InteropServices;

using System.Security.Permissions;

 

namespace WebBrowserExtensibility

{

  [PermissionSetAttribute(SecurityAction.Demand, Name="FullTrust")]

  public class Form1 : Form

  {

    [STAThread]

    public static void Main()

    {

      Application.Run(new Form1());

    }

    private WebBrowser2 wb = new WebBrowser2();

    public Form1()

    {

      wb.Dock = DockStyle.Fill;

      wb.NavigateError += new

        WebBrowserNavigateErrorEventHandler(wb_NavigateError);

      Controls.Add(wb);

      wb.Navigate("www.widgets.microsoft.com");

    }

    private void wb_NavigateError(

      object sender, WebBrowserNavigateErrorEventArgs e)

    {

      // Display an error message to the user.

      MessageBox.Show("Cannot navigate to " + e.Url);

    }

  }

 

  public class WebBrowser2 : WebBrowser

  {

    AxHost.ConnectionPointCookie cookie;

    WebBrowser2EventHelper helper;

    [PermissionSetAttribute(SecurityAction.LinkDemand, Name="FullTrust")]

    protected override void CreateSink()

    {

      base.CreateSink();

      helper = new WebBrowser2EventHelper(this);

      cookie = new AxHost.ConnectionPointCookie(

        this.ActiveXInstance, helper, typeof(DWebBrowserEvents2));

    }

 

    [PermissionSetAttribute(SecurityAction.LinkDemand, Name="FullTrust")]

    protected override void DetachSink()

    {

      if (cookie != null)

      {

        cookie.Disconnect();

        cookie = null;

      }

      base.DetachSink();

    }

    public event WebBrowserNavigateErrorEventHandler NavigateError;

    protected virtual void OnNavigateError(

      WebBrowserNavigateErrorEventArgs e)

    {

      if (this.NavigateError != null)

      {

        this.NavigateError(this, e);

      }

    }

    private class WebBrowser2EventHelper :

      StandardOleMarshalObject, DWebBrowserEvents2

    {

      private WebBrowser2 parent;

 

      public WebBrowser2EventHelper(WebBrowser2 parent)

      {

        this.parent = parent;

      }

 

      public void NavigateError(object pDisp, ref object url,

        ref object frame, ref object statusCode, ref bool cancel)

      {

        // Raise the NavigateError event.

        this.parent.OnNavigateError(

          new WebBrowserNavigateErrorEventArgs(

          (String)url, (String)frame, (Int32)statusCode, cancel));

      }

    }

  }

  public delegate void WebBrowserNavigateErrorEventHandler(object sender,

    WebBrowserNavigateErrorEventArgs e);

  public class WebBrowserNavigateErrorEventArgs : EventArgs

  {

    private String urlValue;

    private String frameValue;

    private Int32 statusCodeValue;

    private Boolean cancelValue;

 

    public WebBrowserNavigateErrorEventArgs(

      String url, String frame, Int32 statusCode, Boolean cancel)

    {

      urlValue = url;

      frameValue = frame;

      statusCodeValue = statusCode;

      cancelValue = cancel;

    }

 

    public String Url

    {

      get { return urlValue; }

      set { urlValue = value; }

    }

 

    public String Frame

    {

      get { return frameValue; }

      set { frameValue = value; }

    }

 

    public Int32 StatusCode

    {

      get { return statusCodeValue; }

      set { statusCodeValue = value; }

    }

 

    public Boolean Cancel

    {

      get { return cancelValue; }

      set { cancelValue = value; }

    }

  }

  [ComImport, Guid("34A715A0-6587-11D0-924A-0020AFC7AC4D"),

  InterfaceType(ComInterfaceType.InterfaceIsIDispatch),

  TypeLibType(TypeLibTypeFlags.FHidden)]

  public interface DWebBrowserEvents2

  {

    [DispId(271)]

    void NavigateError(

      [In, MarshalAs(UnmanagedType.IDispatch)] object pDisp,

      [In] ref object URL, [In] ref object frame,

      [In] ref object statusCode, [In, Out] ref bool cancel);

  }

}

string title = "TabPage " + (tabControl1.TabCount + 1).ToString();

TabPage myTabPage = new TabPage(title);

tabControl1.TabPages.Add(myTabPage);

using System.Drawing;

using System.Windows.Forms;

public class Form1 : Form

{

  private Rectangle tabArea;

  private RectangleF tabTextArea;

  public Form1()

  {

    TabControl tabControl1 = new TabControl();

    TabPage tabPage1 = new TabPage();

    tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;

    tabControl1.SizeMode = TabSizeMode.Fixed;

    tabControl1.Controls.Add(tabPage1);

    tabControl1.ItemSize = new Size(80, 30);

    tabControl1.Location = new Point(25, 25);

    tabControl1.Size = new Size(250, 250);

    tabPage1.TabIndex = 0;

    ClientSize = new Size(300, 300);

    Controls.Add(tabControl1);

    tabArea = tabControl1.GetTabRect(0);

    tabTextArea = (RectangleF)tabControl1.GetTabRect(0);

    tabControl1.DrawItem += new DrawItemEventHandler(DrawOnTab);

  }

  private void DrawOnTab(object sender, DrawItemEventArgs e)

  {

    Graphics g = e.Graphics;

    Pen p = new Pen(Color.Blue);

    Font font = new Font("Arial", 10.0f);

    SolidBrush brush = new SolidBrush(Color.Red);

    g.DrawRectangle(p, tabArea);

    g.DrawString("tabPage1", font, brush, tabTextArea);

  }

  static void Main()

  {

    Application.Run(new Form1());

  }

}

public void CreateNewTabPage(string url)

{

  ExtendedWebBrowser web = new ExtendedWebBrowser();

  web.Name = "WebBroswer" + _webBrowserLists.Count.ToString();

  web.Dock = DockStyle.Fill;

  web.Margin = new Padding(0, 0, 0, 0);

  web.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);

  web.BeforeNewWindow += new EventHandler(webBrowser1_BeforeNewWindow);

  web.Navigate(url);

  _webBrowserLists.Add(web);

 

  TabPage tbp = new TabPage();

  tbp.Name = "TabPage" + tabControl1.TabCount.ToString();

  tbp.Text = "空白页";

  tbp.Padding = new Padding(0, 3, 0, 0);

  tbp.Margin = new Padding(0, 3, 0, 0);

  tbp.ImageIndex = 0;

  tbp.Controls.Add(web);

 

  this.tabControl1.Controls.Add(tbp);

  this.tabControl1.SelectedTab = tbp;

}

 

u 把网页标题及图片关闭按钮的绘制选项卡中代码实现如下：

private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)

{

 

  try

  {

    Graphics g = e.Graphics;

 

    Rectangle tabRectangle = this.tabControl1.GetTabRect(e.Index);

 

    //先添加TabPage属性 

    g.DrawString(this.tabControl1.TabPages[e.Index].Text

    , this.Font, SystemBrushes.ControlText, tabRectangle.X + 3, tabRectangle.Y + 3);

 

    if (tabControl1.TabCount > 1)

    {

      //再画一个矩形框

      using (Pen p = new Pen(SystemColors.Control))

      {

        tabRectangle.Offset(tabRectangle.Width - (CLOSE_SIZE + 3), 2);

        tabRectangle.Width = CLOSE_SIZE;

        tabRectangle.Height = CLOSE_SIZE;

        g.DrawRectangle(p, tabRectangle);

      }

 

      g.DrawImage(e.State == DrawItemState.Selected ? imageList1.Images["closeSelected"] : imageList1.Images["close"], new Point(tabRectangle.X, tabRectangle.Y));

 

    }

    g.Dispose();

  }

  catch (Exception ex)

  {

    throw (ex);

  }

}

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)

{

  ExtendedWebBrowser web = (ExtendedWebBrowser)(sender);

  string title = web.Document.Title.Trim();

  TabPage tb = (TabPage)web.Parent;

  tb.Text = title.Length > 6 ? title.Substring(0, 6) + "..." : title;

  if (tabControl1.SelectedTab == tb)

  {

    this.Text = title;

  }

}

private void webBrowser1_BeforeNewWindow(object sender, System.EventArgs e)

{

  WebBrowserExtendedNavigatingEventArgs eventArgs = e as WebBrowserExtendedNavigatingEventArgs;

  CreateNewTabPage(eventArgs.Url);

  eventArgs.Cancel = true;

}