小编典典

如何开始开发Internet Explorer扩展?

c#

这里有没有人有/可以开发可以共享其知识的IE扩展的经验?这将包括代码示例,或指向好的示例的链接,或有关过程的文档,或任何内容。

我真的很想这样做,但是我遇到了糟糕的文档,糟糕的代码/示例代码/缺少它。您可以提供的任何帮助/资源将不胜感激。

具体来说,我想先介绍如何从IE扩展中访问/操作DOM。

编辑,更多详细信息:

理想情况下,我想植入一个工具栏按钮,单击该工具栏按钮时,会弹出一个包含指向外部站点的链接的菜单。我还想访问DOM并根据某些条件在页面上植入JavaScript。

在IE扩展中保留信息的最佳方法是什么?在Firefox / Chrome
/最现代的浏览器中,您可以使用window.localStorage,但显然对于IE8 /
IE7,这不是一种选择。也许是SQLite数据库或类似的?可以假设将.NET 4.0安装在用户的计算机上吗?

我不想使用Spice IE,因为我也想构建一个与IE9兼容的。我也向这个问题添加了C 标记,因为如果最好在C 中构建一个,则可以这样做。


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2020-05-19

共1个答案

小编典典

[更新]我正在更新此答案,以在带有 Visual Studio 2017社区的* Windows 10 x64中 使用 Internet
Explorer 11
。此答案的先前版本(对于Internet Explorer 8,在Windows 7 x64和Visual Studio
2010中)在此答案的底部。
***

创建有效的Internet Explorer 11加载项

我使用 的Visual Studio 2017年的社区C#.Net框架4.6.1 ,所以某些步骤可能是你稍有不同。

您需要以 管理员 身份 打开Visual Studio 来构建解决方案,以便构建后脚本可以注册BHO(需要注册表访问)。

首先创建一个类库。我叫我 InternetExplorerExtension

将这些引用添加到项目中:

  • Interop.SHDocVw:“ COM”选项卡/搜索 "Microsoft Internet Controls"
  • Microsoft.mshtml:“程序集”选项卡/搜索 "Microsoft.mshtml"

注意: 尽管可以在“添加引用”窗口中找到MSHTML,但仍未在我的系统中注册它。这在构建时导致错误:

找不到类型库“ MSHTML”的包装程序集

可在http://techninotes.blogspot.com/2016/08/fixing-cannot-find-wrapper-
assembly-for.html上找到此修复程序, 或者,您可以运行以下批处理脚本:

"%ProgramFiles(x86)%\Microsoft Visual Studio\2017\Community\Common7\Tools\VsDevCmd.bat"
cd "%ProgramFiles(x86)%\Microsoft Visual Studio\2017\Community\Common7\IDE\PublicAssemblies"
regasm Microsoft.mshtml.dll
gacutil /i Microsoft.mshtml.dll

创建以下文件:

IEAddon.cs

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using Microsoft.Win32;
using mshtml;
using SHDocVw;

namespace InternetExplorerExtension
{
    [ComVisible(true)]
    [ClassInterface(ClassInterfaceType.None)]
    [Guid("D40C654D-7C51-4EB3-95B2-1E23905C2A2D")]
    [ProgId("MyBHO.WordHighlighter")]
    public class WordHighlighterBHO : IObjectWithSite, IOleCommandTarget
    {
        const string DefaultTextToHighlight = "browser";

        IWebBrowser2 browser;
        private object site;

        #region Highlight Text
        void OnDocumentComplete(object pDisp, ref object URL)
        {
            try
            {
                // @Eric Stob: Thanks for this hint!
                // This was used to prevent this method being executed more than once in IE8... but now it seems to not work anymore.
                //if (pDisp != this.site)
                //    return;

                var document2 = browser.Document as IHTMLDocument2;
                var document3 = browser.Document as IHTMLDocument3;

                var window = document2.parentWindow;
                window.execScript(@"function FncAddedByAddon() { alert('Message added by addon.'); }");

                Queue<IHTMLDOMNode> queue = new Queue<IHTMLDOMNode>();
                foreach (IHTMLDOMNode eachChild in document3.childNodes)
                    queue.Enqueue(eachChild);

                while (queue.Count > 0)
                {
                    // replacing desired text with a highlighted version of it
                    var domNode = queue.Dequeue();

                    var textNode = domNode as IHTMLDOMTextNode;
                    if (textNode != null)
                    {
                        if (textNode.data.Contains(TextToHighlight))
                        {
                            var newText = textNode.data.Replace(TextToHighlight, "<span style='background-color: yellow; cursor: hand;' onclick='javascript:FncAddedByAddon()' title='Click to open script based alert window.'>" + TextToHighlight + "</span>");
                            var newNode = document2.createElement("span");
                            newNode.innerHTML = newText;
                            domNode.replaceNode((IHTMLDOMNode)newNode);
                        }
                    }
                    else
                    {
                        // adding children to collection
                        var x = (IHTMLDOMChildrenCollection)(domNode.childNodes);
                        foreach (IHTMLDOMNode eachChild in x)
                        {
                            if (eachChild is mshtml.IHTMLScriptElement)
                                continue;
                            if (eachChild is mshtml.IHTMLStyleElement)
                                continue;

                            queue.Enqueue(eachChild);
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        #endregion
        #region Load and Save Data
        static string TextToHighlight = DefaultTextToHighlight;
        public static string RegData = "Software\\MyIEExtension";

        [DllImport("ieframe.dll")]
        public static extern int IEGetWriteableHKCU(ref IntPtr phKey);

        private static void SaveOptions()
        {
            // In IE 7,8,9,(desktop)10 tabs run in Protected Mode
            // which prohibits writes to HKLM, HKCU.
            // Must ask IE for "Writable" registry section pointer
            // which will be something like HKU/S-1-7***/Software/AppDataLow/
            // In "metro" IE 10 mode, tabs run in "Enhanced Protected Mode"
            // where BHOs are not allowed to run, except in edge cases.
            // see http://blogs.msdn.com/b/ieinternals/archive/2012/03/23/understanding-ie10-enhanced-protected-mode-network-security-addons-cookies-metro-desktop.aspx
            IntPtr phKey = new IntPtr();
            var answer = IEGetWriteableHKCU(ref phKey);
            RegistryKey writeable_registry = RegistryKey.FromHandle(
                new Microsoft.Win32.SafeHandles.SafeRegistryHandle(phKey, true)
            );
            RegistryKey registryKey = writeable_registry.OpenSubKey(RegData, true);

            if (registryKey == null)
                registryKey = writeable_registry.CreateSubKey(RegData);
            registryKey.SetValue("Data", TextToHighlight);

            writeable_registry.Close();
        }
        private static void LoadOptions()
        {
            // In IE 7,8,9,(desktop)10 tabs run in Protected Mode
            // which prohibits writes to HKLM, HKCU.
            // Must ask IE for "Writable" registry section pointer
            // which will be something like HKU/S-1-7***/Software/AppDataLow/
            // In "metro" IE 10 mode, tabs run in "Enhanced Protected Mode"
            // where BHOs are not allowed to run, except in edge cases.
            // see http://blogs.msdn.com/b/ieinternals/archive/2012/03/23/understanding-ie10-enhanced-protected-mode-network-security-addons-cookies-metro-desktop.aspx
            IntPtr phKey = new IntPtr();
            var answer = IEGetWriteableHKCU(ref phKey);
            RegistryKey writeable_registry = RegistryKey.FromHandle(
                new Microsoft.Win32.SafeHandles.SafeRegistryHandle(phKey, true)
            );
            RegistryKey registryKey = writeable_registry.OpenSubKey(RegData, true);

            if (registryKey == null)
                registryKey = writeable_registry.CreateSubKey(RegData);
            registryKey.SetValue("Data", TextToHighlight);

            if (registryKey == null)
            {
                TextToHighlight = DefaultTextToHighlight;
            }
            else
            {
                TextToHighlight = (string)registryKey.GetValue("Data");
            }
            writeable_registry.Close();
        }
        #endregion

        [Guid("6D5140C1-7436-11CE-8034-00AA006009FA")]
        [InterfaceType(1)]
        public interface IServiceProvider
        {
            int QueryService(ref Guid guidService, ref Guid riid, out IntPtr ppvObject);
        }

        #region Implementation of IObjectWithSite
        int IObjectWithSite.SetSite(object site)
        {
            this.site = site;

            if (site != null)
            {
                LoadOptions();

                var serviceProv = (IServiceProvider)this.site;
                var guidIWebBrowserApp = Marshal.GenerateGuidForType(typeof(IWebBrowserApp)); // new Guid("0002DF05-0000-0000-C000-000000000046");
                var guidIWebBrowser2 = Marshal.GenerateGuidForType(typeof(IWebBrowser2)); // new Guid("D30C1661-CDAF-11D0-8A3E-00C04FC9E26E");
                IntPtr intPtr;
                serviceProv.QueryService(ref guidIWebBrowserApp, ref guidIWebBrowser2, out intPtr);

                browser = (IWebBrowser2)Marshal.GetObjectForIUnknown(intPtr);

                ((DWebBrowserEvents2_Event)browser).DocumentComplete +=
                    new DWebBrowserEvents2_DocumentCompleteEventHandler(this.OnDocumentComplete);
            }
            else
            {
                ((DWebBrowserEvents2_Event)browser).DocumentComplete -=
                    new DWebBrowserEvents2_DocumentCompleteEventHandler(this.OnDocumentComplete);
                browser = null;
            }
            return 0;
        }
        int IObjectWithSite.GetSite(ref Guid guid, out IntPtr ppvSite)
        {
            IntPtr punk = Marshal.GetIUnknownForObject(browser);
            int hr = Marshal.QueryInterface(punk, ref guid, out ppvSite);
            Marshal.Release(punk);
            return hr;
        }
        #endregion
        #region Implementation of IOleCommandTarget
        int IOleCommandTarget.QueryStatus(IntPtr pguidCmdGroup, uint cCmds, ref OLECMD prgCmds, IntPtr pCmdText)
        {
            return 0;
        }
        int IOleCommandTarget.Exec(IntPtr pguidCmdGroup, uint nCmdID, uint nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
        {
            try
            {
                // Accessing the document from the command-bar.
                var document = browser.Document as IHTMLDocument2;
                var window = document.parentWindow;
                var result = window.execScript(@"alert('You will now be allowed to configure the text to highlight...');");

                var form = new HighlighterOptionsForm();
                form.InputText = TextToHighlight;
                if (form.ShowDialog() != DialogResult.Cancel)
                {
                    TextToHighlight = form.InputText;
                    SaveOptions();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

            return 0;
        }
        #endregion

        #region Registering with regasm
        public static string RegBHO = "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Browser Helper Objects";
        public static string RegCmd = "Software\\Microsoft\\Internet Explorer\\Extensions";

        [ComRegisterFunction]
        public static void RegisterBHO(Type type)
        {
            string guid = type.GUID.ToString("B");

            // BHO
            {
                RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(RegBHO, true);
                if (registryKey == null)
                    registryKey = Registry.LocalMachine.CreateSubKey(RegBHO);
                RegistryKey key = registryKey.OpenSubKey(guid);
                if (key == null)
                    key = registryKey.CreateSubKey(guid);
                key.SetValue("Alright", 1);
                registryKey.Close();
                key.Close();
            }

            // Command
            {
                RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(RegCmd, true);
                if (registryKey == null)
                    registryKey = Registry.LocalMachine.CreateSubKey(RegCmd);
                RegistryKey key = registryKey.OpenSubKey(guid);
                if (key == null)
                    key = registryKey.CreateSubKey(guid);
                key.SetValue("ButtonText", "Highlighter options");
                key.SetValue("CLSID", "{1FBA04EE-3024-11d2-8F1F-0000F87ABD16}");
                key.SetValue("ClsidExtension", guid);
                key.SetValue("Icon", "");
                key.SetValue("HotIcon", "");
                key.SetValue("Default Visible", "Yes");
                key.SetValue("MenuText", "&Highlighter options");
                key.SetValue("ToolTip", "Highlighter options");
                //key.SetValue("KeyPath", "no");
                registryKey.Close();
                key.Close();
            }
        }

        [ComUnregisterFunction]
        public static void UnregisterBHO(Type type)
        {
            string guid = type.GUID.ToString("B");
            // BHO
            {
                RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(RegBHO, true);
                if (registryKey != null)
                    registryKey.DeleteSubKey(guid, false);
            }
            // Command
            {
                RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(RegCmd, true);
                if (registryKey != null)
                    registryKey.DeleteSubKey(guid, false);
            }
        }
        #endregion
    }
}

互操作

using System;
using System.Runtime.InteropServices;
namespace InternetExplorerExtension
{
    [ComVisible(true)]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    [Guid("FC4801A3-2BA9-11CF-A229-00AA003D7352")]
    public interface IObjectWithSite
    {
        [PreserveSig]
        int SetSite([MarshalAs(UnmanagedType.IUnknown)]object site);
        [PreserveSig]
        int GetSite(ref Guid guid, [MarshalAs(UnmanagedType.IUnknown)]out IntPtr ppvSite);
    }


    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
    public struct OLECMDTEXT
    {
        public uint cmdtextf;
        public uint cwActual;
        public uint cwBuf;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 100)]
        public char rgwz;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct OLECMD
    {
        public uint cmdID;
        public uint cmdf;
    }

    [ComImport(), ComVisible(true),
    Guid("B722BCCB-4E68-101B-A2BC-00AA00404770"),
    InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IOleCommandTarget
    {

        [return: MarshalAs(UnmanagedType.I4)]
        [PreserveSig]
        int QueryStatus(
            [In] IntPtr pguidCmdGroup,
            [In, MarshalAs(UnmanagedType.U4)] uint cCmds,
            [In, Out, MarshalAs(UnmanagedType.Struct)] ref OLECMD prgCmds,
            //This parameter must be IntPtr, as it can be null
            [In, Out] IntPtr pCmdText);

        [return: MarshalAs(UnmanagedType.I4)]
        [PreserveSig]
        int Exec(
            //[In] ref Guid pguidCmdGroup,
            //have to be IntPtr, since null values are unacceptable
            //and null is used as default group!
            [In] IntPtr pguidCmdGroup,
            [In, MarshalAs(UnmanagedType.U4)] uint nCmdID,
            [In, MarshalAs(UnmanagedType.U4)] uint nCmdexecopt,
            [In] IntPtr pvaIn,
            [In, Out] IntPtr pvaOut);
    }
}

最后是表格,我们将使用它来配置选项。在此表格中,放置a TextBox和Ok Button。将按钮的 DialogResult 设置为
Ok 。将此代码放在表单代码中:

using System.Windows.Forms;
namespace InternetExplorerExtension
{
    public partial class HighlighterOptionsForm : Form
    {
        public HighlighterOptionsForm()
        {
            InitializeComponent();
        }

        public string InputText
        {
            get { return this.textBox1.Text; }
            set { this.textBox1.Text = value; }
        }
    }
}

在项目属性中,执行以下操作:

  • 用强力钥匙在组件上签名;
  • 在“调试”选项卡中,将“ 启动外部程序” 设置为C:\Program Files (x86)\Internet Explorer\iexplore.exe
  • 在“调试”选项卡中,将“ 命令行参数” 设置为http://msdn.microsoft.com/en-us/library/ms976373.aspx#bho_getintouch
  • 在“构建事件”选项卡中,将 “构建后事件”命令行设置 为:

    “%ProgramFiles(x86)%\ Microsoft SDKs \ Windows \ v10.0A \ bin \ NETFX 4.6.1 Tools \ gacutil.exe” / f / i“ $(TargetDir)$(TargetFileName)”
    

    “%windir%\ Microsoft.NET \ Framework \ v4.0.30319 \ RegAsm.exe” /取消注册“ $(TargetDir)$(TargetFileName)”

    “%windir%\ Microsoft.NET \ Framework \ v4.0.30319 \ RegAsm.exe”“ $(TargetDir)$(TargetFileName)”

注意: 即使我的计算机是x64,我也使用了非x64的路径gacutil.exe并且可以正常工作… x64的专用路径是:

C:\ Program Files(x86)\ Microsoft SDKs \ Windows \ v10.0A \ bin \ NETFX 4.6.1 Tools \ **x64 \** gacutil.exe

64位IE 需要64位编译和64位注册的BHO。尽管我只能使用32位IE11进行调试,但是32位注册扩展也可以通过运行64位IE11来工作。

这个答案似乎对此有一些附加信息:https :
//stackoverflow.com/a/23004613/195417

如果需要,可以使用64位重装:

%windir%\ Microsoft.NET \ Framework **64 \** v4.0.30319 \ RegAsm.exe

此加载项如何工作

我没有更改加载项的行为。。。下面介绍一下IE8部分。


## IE8的先前答案

伙计…这是很多工作!我很好奇如何做到这一点,以至于我自己做了。

首先…信誉不全是我的。这是我在以下网站上发现的内容的汇总:

当然,我希望我的答案具有您要求的功能:

  • DOM遍历以查找某些内容;
  • 显示窗口的按钮(以我为例进行设置)
  • 保留配置(我将为此使用注册表)
  • 最后执行javascript。

我将逐步介绍它,以及如何在 Windows 7 x64中* 使用 Internet Explorer 8 进行 管理
…请注意,我无法在其他配置中进行测试。希望你理解=)
*

创建有效的Internet Explorer 8加载项

我使用的是 Visual Studio 2010C#4.Net Framework 4
,因此其中一些步骤可能对您略有不同。

创建了一个类库。我叫我 InternetExplorerExtension

将这些引用添加到项目中:

  • 互操作
  • Microsoft.mshtml

注意:这些参考可能在每台计算机的不同位置。

这是我在csproj中的参考部分包含的内容:

<Reference Include="Interop.SHDocVw, Version=1.1.0.0, Culture=neutral, PublicKeyToken=90ba9c70f846762e, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <EmbedInteropTypes>True</EmbedInteropTypes>
  <HintPath>C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE\PrivateAssemblies\Interop.SHDocVw.dll</HintPath>
</Reference>
<Reference Include="Microsoft.CSharp" />
<Reference Include="Microsoft.mshtml, Version=7.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
  <EmbedInteropTypes>True</EmbedInteropTypes>
</Reference>
<Reference Include="System" />
<Reference Include="System.Data" />
<Reference Include="System.Drawing" />
<Reference Include="System.Windows.Forms" />
<Reference Include="System.Xml" />

创建文件的方式与更新IE11文件的方式相同。

IEAddon.cs

您可以取消注释IE11版本中的以下几行:

...
// @Eric Stob: Thanks for this hint!
// This was used to prevent this method being executed more than once in IE8... but now it seems to not work anymore.
if (pDisp != this.site)
    return;
...

互操作

与IE11版本相同。

最后是表格,我们将使用它来配置选项。在此表格中,放置a TextBox和Ok Button。将按钮的 DialogResult 设置为
Ok 。该代码与IE11插件相同。

在项目属性中,执行以下操作:

  • 用强力钥匙在组件上签名;
  • 在“调试”选项卡中,将“ 启动外部程序” 设置为C:\Program Files (x86)\Internet Explorer\iexplore.exe
  • 在“调试”选项卡中,将“ 命令行参数” 设置为http://msdn.microsoft.com/en-us/library/ms976373.aspx#bho_getintouch
  • 在“构建事件”选项卡中,将 “构建后事件”命令行设置 为:

    “ C:\ Program Files(x86)\ Microsoft SDKs \ Windows \ v7.0A \ Bin \ NETFX 4.0 Tools \ **x64** \ gacutil.exe” / f / i“ $(TargetDir)$(TargetFileName)”
    

    “ C:\ Windows \ Microsoft.NET \ Framework \ v4.0.30319 \ RegAsm.exe” /取消注册“ $(TargetDir)$(TargetFileName)”

    “ C:\ Windows \ Microsoft.NET \ Framework \ v4.0.30319 \ RegAsm.exe”“ $(TargetDir)$(TargetFileName)”

注意: 由于我的计算机是x64,因此我的计算机上gacutil可执行文件的路径中有一个特定的x64,可能与您的不同。

64位IE 需要64位编译和64位注册的BHO。使用64位RegAsm.exe(通常位于C:\ Windows \ Microsoft.NET \
Framework64 \ v4.0.30319 \ RegAsm.exe中)

此加载项如何工作

它遍历所有DOM树,用黄色背景本身替换使用按钮配置的文本。如果单击发黄的文本,它将调用动态插入页面的javascript函数。默认单词是“浏览器”,因此它与很多单词匹配!
编辑:
更改要突出显示的字符串后,您必须单击URL框,然后按Enter键。F5将不起作用,我认为这是因为F5被视为“导航”,并且需要收听导航事件(也许)。我稍后将尝试解决。

现在,该走了。我很累。随便问问题…也许是因为我要去旅行而无法回答…三天后我会回来,但在此期间我会尽量来这里。

2020-05-19