在WebBrowser中截获弹出对话框内容并将其屏蔽
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
MyWebBrowser1.WBDocHostShowUIShowMessage += new MyWebBrowser.DocHostShowUIShowMessageEventHandler(MyWebBrowser1_WBDocHostShowUIShowMessage);
}
MyWebBrowser MyWebBrowser1 = new MyWebBrowser();
private void Form1_Load(object sender, EventArgs e)
{
this.Controls.Add(MyWebBrowser1);
MyWebBrowser1.Visible = true;
MyWebBrowser1.Navigate("about:blank");
MyWebBrowser1.Document.Write("<mce:script type="text/<a href="http://lib.csdn.net/base/javascript" class='replace_word' title="JavaScript知识库" target='_blank' style='color:#df3434; font-weight:bold;'>JavaScript</a>"><!--
alert('我就是确定按钮啊')
// --></mce:script>");
}
void MyWebBrowser1_WBDocHostShowUIShowMessage(object sender, ExtendedBrowserMessageEventArgs e)
{
e.Cancel = true;//屏蔽弹出，自行处理
if (MessageBox.Show("是否要屏蔽Alert对话框", "提示", MessageBoxButtons.YesNo) == DialogResult.No)
{
MessageBox.Show(e.Text, e.Caption);
}
}
}
public class MyWebBrowser : WebBrowser
{
//委托、事件
public delegate void DocHostShowUIShowMessageEventHandler(object sender, ExtendedBrowserMessageEventArgs e);
public event DocHostShowUIShowMessageEventHandler WBDocHostShowUIShowMessage = null; #region ExtendedWebBrowserSite
class ExtendedWebBrowserSite : WebBrowser.WebBrowserSite, UnsafeNativeMethods.IDocHostShowUI
{
private MyWebBrowser _Browser;
public ExtendedWebBrowserSite(MyWebBrowser host)
: base(host)
{
_Browser = host;
}
int UnsafeNativeMethods.IDocHostShowUI.ShowMessage(IntPtr hwnd, string lpstrText,
string lpstrCaption, uint dwType,
string lpstrHelpFile, uint dwHelpContext, ref int lpResult)
{
int iRet = 1; //Hresults.S_FALSE
if (_Browser.WBDocHostShowUIShowMessage != null)
{
ExtendedBrowserMessageEventArgs args = new ExtendedBrowserMessageEventArgs(hwnd, lpstrText, lpstrCaption, dwType, lpstrHelpFile, dwHelpContext);
_Browser.WBDocHostShowUIShowMessage(this, args);
if (args.Cancel == true)
{ iRet = 0;//Hresults.S_OK;
lpResult = args.pResult;
}
}
return iRet;
}
int UnsafeNativeMethods.IDocHostShowUI.ShowHelp(IntPtr hwnd, string pszHelpFile, uint uCommand, uint dwData, UnsafeNativeMethods.tagPOINT ptMouse, object pDispatchObjectHit)
{
return unchecked((int)0x80004001);//Hresults.E_NOTIMPL
}
}
protected override WebBrowserSiteBase CreateWebBrowserSiteBase()
{
return new ExtendedWebBrowserSite(this);
}
#endregion
}
public class UnsafeNativeMethods
{
#region IDocHostShowUI
[StructLayout(LayoutKind.Explicit, Pack = 4)]
public struct __MIDL_IWinTypes_0009
{
// Fields
[FieldOffset(0)]
public int hInproc;
[FieldOffset(0)]
public int hRemote;
}
[StructLayout(LayoutKind.Sequential, Pack = 4)]
public struct _RemotableHandle
{
public int fContext;
public __MIDL_IWinTypes_0009 u;
}
[StructLayout(LayoutKind.Sequential, Pack = 4)]
public struct tagPOINT
{
public int x;
public int y;
}
[ComImport, ComVisible(true)]
[Guid("C4D244B0-D43E-11CF-893B-00AA00BDCE1A")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IDocHostShowUI
{
[return: MarshalAs(UnmanagedType.I4)]
[PreserveSig]
int ShowMessage(
IntPtr hwnd,
[MarshalAs(UnmanagedType.LPWStr)] string lpstrText,
[MarshalAs(UnmanagedType.LPWStr)] string lpstrCaption,
[MarshalAs(UnmanagedType.U4)] uint dwType,
[MarshalAs(UnmanagedType.LPWStr)] string lpstrHelpFile,
[MarshalAs(UnmanagedType.U4)] uint dwHelpContext,
[In, Out] ref int lpResult);
[return: MarshalAs(UnmanagedType.I4)]
[PreserveSig]
int ShowHelp(
IntPtr hwnd,
[MarshalAs(UnmanagedType.LPWStr)] string pszHelpFile,
[MarshalAs(UnmanagedType.U4)] uint uCommand,
[MarshalAs(UnmanagedType.U4)] uint dwData,
[In, MarshalAs(UnmanagedType.Struct)] tagPOINT ptMouse,
[Out, MarshalAs(UnmanagedType.IDispatch)] object pDispatchObjectHit);
}
#endregion
}
#region ExtendedBrowserMessageEventArgs
public class ExtendedBrowserMessageEventArgs : CancelEventArgs
{
private int _plResult;
public int pResult
{
get { return _plResult; }
}
public System.Windows.Forms.DialogResult DlgResult
{
set { _plResult = (int)value; }
}
private IntPtr _hwnd;
public IntPtr hwnd
{
get { return _hwnd; }
}
private string _lpstrText;
public string Text
{
get { return _lpstrText; }
}
private string _lpstrCaption;
public string Caption
{
get { return _lpstrCaption; }
}
private uint _dwType;
public System.Windows.Forms.MessageBoxButtons DlgButtons
{
get
{
switch (_dwType & (int)MsgBoxButton.MASK)
{
case (int)MsgBoxButton.MB_OKCANCEL:
return System.Windows.Forms.MessageBoxButtons.OKCancel;
case (int)MsgBoxButton.MB_ABORTRETRYIGNORE:
return System.Windows.Forms.MessageBoxButtons.AbortRetryIgnore;
case (int)MsgBoxButton.MB_YESNOCANCEL:
return System.Windows.Forms.MessageBoxButtons.YesNoCancel;
case (int)MsgBoxButton.MB_YESNO:
return System.Windows.Forms.MessageBoxButtons.YesNo;
case (int)MsgBoxButton.MB_RETRYCANCEL:
return System.Windows.Forms.MessageBoxButtons.RetryCancel;
case (int)MsgBoxButton.MB_OK:
default:
return System.Windows.Forms.MessageBoxButtons.OK;
}
}
}
public System.Windows.Forms.MessageBoxIcon DlgIcon
{
get
{
switch (_dwType & (int)MsgBoxIcon.MASK)
{
case (int)MsgBoxIcon.MB_ICONHAND:
return System.Windows.Forms.MessageBoxIcon.Hand;
case (int)MsgBoxIcon.MB_ICONQUESTION:
return System.Windows.Forms.MessageBoxIcon.Question;
case (int)MsgBoxIcon.MB_ICONEXCLAMATION:
return System.Windows.Forms.MessageBoxIcon.Exclamation;
case (int)MsgBoxIcon.MB_ICONASTERISK:
return System.Windows.Forms.MessageBoxIcon.Asterisk;
case (int)MsgBoxIcon.MB_ICONNONE:
case (int)MsgBoxIcon.MB_USERICON:
default:
return System.Windows.Forms.MessageBoxIcon.None;
}
}
}
public System.Windows.Forms.MessageBoxDefaultButton DlgDefaultButtons
{
get
{
switch (_dwType & (int)MsgBoxDefButton.MASK)
{
case (int)MsgBoxDefButton.MB_DEFBUTTON2:
return System.Windows.Forms.MessageBoxDefaultButton.Button2;
case (int)MsgBoxDefButton.MB_DEFBUTTON3:
return System.Windows.Forms.MessageBoxDefaultButton.Button3;
case (int)MsgBoxDefButton.MB_DEFBUTTON1:
default:
return System.Windows.Forms.MessageBoxDefaultButton.Button1;
}
}
}
public System.Windows.Forms.MessageBoxOptions DlgOptions
{
get
{
switch (_dwType & (int)MsgBoxOption.MASK)
{
case (int)MsgBoxOption.MB_DEFAULT_DESKTOP_ONLY:
return System.Windows.Forms.MessageBoxOptions.DefaultDesktopOnly;
case (int)MsgBoxOption.MB_RIGHT:
return System.Windows.Forms.MessageBoxOptions.RightAlign;
case (int)MsgBoxOption.MB_RTLREADING:
return System.Windows.Forms.MessageBoxOptions.RtlReading;
case (int)MsgBoxOption.MB_SERVICE_NOTIFICATION1:
case (int)MsgBoxOption.MB_SERVICE_NOTIFICATION2:
return System.Windows.Forms.MessageBoxOptions.ServiceNotification;
default:
return 0;
}
}
}
public bool displayHelpButton
{
get { return (_dwType & (int)MsgBoxHelpButton.MASK) == (int)MsgBoxHelpButton.MB_HELP; }
}
private string _lpstrHelpFile;
public string lpstrHelpFile
{
get { return _lpstrHelpFile; }
}
private uint _dwHelpContext;
public uint dwHelpContext
{
get { return _dwHelpContext; }
}
public ExtendedBrowserMessageEventArgs(IntPtr Hwnd, string LpstrText, string LpstrCaption, uint DwType, string LpstrHelpFile, uint DwHelpContext)
: base()
{
this._hwnd = Hwnd;
_lpstrText = LpstrText;
_lpstrCaption = LpstrCaption;
_dwType = DwType;
_lpstrHelpFile = LpstrHelpFile;
_dwHelpContext = DwHelpContext;
switch (DlgButtons)
{
case System.Windows.Forms.MessageBoxButtons.OKCancel:
case System.Windows.Forms.MessageBoxButtons.RetryCancel:
case System.Windows.Forms.MessageBoxButtons.YesNoCancel:
DlgResult = System.Windows.Forms.DialogResult.Cancel;
break;
case System.Windows.Forms.MessageBoxButtons.YesNo:
DlgResult = System.Windows.Forms.DialogResult.No;
break;
case System.Windows.Forms.MessageBoxButtons.AbortRetryIgnore:
DlgResult = System.Windows.Forms.DialogResult.Abort;
break;
case System.Windows.Forms.MessageBoxButtons.OK:
default:
DlgResult = System.Windows.Forms.DialogResult.OK;
break;
}
}
}
public enum MsgBoxButton
{
MASK = 0x0000000F,
MB_OK = 0x00000000,
MB_OKCANCEL = 0x00000001,
MB_ABORTRETRYIGNORE = 0x00000002,
MB_YESNOCANCEL = 0x00000003,
MB_YESNO = 0x00000004,
MB_RETRYCANCEL = 0x00000005
}
public enum MsgBoxIcon
{
MASK = 0x000000F0,
MB_ICONNONE = 0x00000000,
MB_ICONHAND = 0x00000010,
MB_ICONSTOP = 0x00000010,
MB_ICONERROR = 0x00000010,
MB_ICONQUESTION = 0x00000020,
MB_ICONEXCLAMATION = 0x00000030,
MB_ICONWARNING = 0x00000030,
MB_ICONASTERISK = 0x00000040,
MB_ICONINFORMATION = 0x00000040,
MB_USERICON = 0x00000080
}
public enum MsgBoxDefButton
{
MASK = 0x00000F00,
MB_DEFBUTTON1 = 0x00000000,
MB_DEFBUTTON2 = 0x00000100,
MB_DEFBUTTON3 = 0x00000200
}
public enum MsgBoxOption
{
MASK = 0x003F0000,
MB_DEFAULT_DESKTOP_ONLY = 0x00020000,
MB_RIGHT = 0x00080000,
MB_RTLREADING = 0x00100000,
MB_SERVICE_NOTIFICATION1 = 0x00200000,
MB_SERVICE_NOTIFICATION2 = 0x00040000
}
public enum MsgBoxHelpButton
{
MASK = 0x00004000,
MB_HELP = 0x00004000
}
#endregion
}
v
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