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如何直接显示已知 dll ID 的图标？

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如何直接显示已知 dll ID 的图标？

有人知道如何直接以“注册表”格式显示图标吗？例如“%SystemRoot%\system32\shell32.dll,112”，即 C:\Windows\System32\shell32.dll,112，通常是图标的 ID，因为它可以在注册表数据中找到“IconPath”值。路径是真实的，“112”图标代码只是一个随机数。

问题是，当 dll 包含数百个图标时，找到正确的图标会很麻烦，即使使用类似图标提取器，当光标悬停在图标上时，它将显示图标信息。所有这些工具似乎都只是以相反的方式发挥作用：必须加载 dll，然后希望使用相应的代码找到图标。

答案1

文件类型的图标是嵌入在已知 DLL 中的资源（即任何类型的图像、媒体等）。该图标编号（或图标组索引）不是随机的。DLL 文件有一个部分来存储这些资源。每个图标都存储有唯一的编号。一种图标可以由不同的图标大小、尺寸和位深度组成。该图标 ID 来自图标组编号，因此当用户更改缩放级别时，它只会更改图标大小而不是图标本身。

举个例子，很容易理解。在这个例子中，我使用资源黑客。以下是 Resource Hacker 中快捷方式文件（.LNK 扩展名）图标的截图（图标可能有所不同）：

Resource_Hacker_Shell32

以下是注册表设置：

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.lnk\ShellNew]
"Handler"="{ceefea1b-3e29-4ef1-b34c-fec79c4f70af}"
"IconPath"="%SystemRoot%\system32\shell32.dll,-16769"
"ItemName"="@shell32.dll,-30397"
"MenuText"="@shell32.dll,-30318"
"NullFile"=""

看到数字“16769”，与截图匹配。但是如何在资源黑客? 答案：下载并运行该软件 --> 复制shell32.dll（或任何 dll/exe 文件）到您的桌面/工作文件夹 --> 将该文件拖到 Resource Hacker 窗口中 --> 双击“图标组” --> 滚动到该数字。可以看到一个图标组中有许多图标，其尺寸为 16x16、20x20 等。这些图标用于文件资源管理器中的不同缩放级别。

答案2

当 dll 包含数百个图标时，找到正确的图标会很麻烦

您可以使用以下 Powershell 脚本.\DisplayIcon.ps1：

<#
.SYNOPSIS
    Exports an ico and bmp file from a given source to a given destination
.Description
    You need to set the Source and Destination locations. First version of a script, I found other examples 
    but all I wanted to do as grab and ico file from an exe but found getting a bmp useful. Others might find useful
.EXAMPLE
    This will run but will nag you for input
    .\Icon_Exporter.ps1
.EXAMPLE
    this will default to shell32.dll automatically for -SourceEXEFilePath
    .\Icon_Exporter.ps1 -TargetIconFilePath 'C:\temp\Myicon.ico' -IconIndexNo 238
.EXAMPLE
    This will give you a green tree icon (press F5 for windows to refresh Windows explorer)
    .\Icon_Exporter.ps1 -SourceEXEFilePath 'C:/Windows/system32/shell32.dll' -TargetIconFilePath 'C:\temp\Myicon.ico' -IconIndexNo 41

.Notes
    Based on http://stackoverflow.com/questions/8435/how-do-you-get-the-icons-out-of-shell32-dll Version 1.1 2012.03.8
    New version: Version 1.2 2015.11.20 (Added missing custom assembly and some error checking for novices)
#>
Param ( 
    [parameter(Mandatory = $true)]
    [string] $SourceEXEFilePath = 'C:/Windows/system32/shell32.dll',
    [parameter(Mandatory = $true)]
    [string] $TargetIconFilePath,
    [parameter(Mandatory = $False)]
    [Int32]$IconIndexNo = 0
)

$code = @"
using System;
using System.Drawing;
using System.Runtime.InteropServices;

namespace System
{
    public class IconExtractor
    {

     public static Icon Extract(string file, int number, bool largeIcon)
     {
      IntPtr large;
      IntPtr small;
      ExtractIconEx(file, number, out large, out small, 1);
      try
      {
       return Icon.FromHandle(largeIcon ? large : small);
      }
      catch
      {
       return null;
      }

     }
     [DllImport("Shell32.dll", EntryPoint = "ExtractIconExW", CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
     private static extern int ExtractIconEx(string sFile, int iIndex, out IntPtr piLargeVersion, out IntPtr piSmallVersion, int amountIcons);

    }
}
"@

If  (-not (Test-path -Path $SourceEXEFilePath -ErrorAction SilentlyContinue ) ) {
    Throw "Source file [$SourceEXEFilePath] does not exist!"
}

[String]$TargetIconFilefolder = [System.IO.Path]::GetDirectoryName($TargetIconFilePath) 
If  (-not (Test-path -Path $TargetIconFilefolder -ErrorAction SilentlyContinue ) ) {
    Throw "Target folder [$TargetIconFilefolder] does not exist!"
}

Try {
    If ($SourceEXEFilePath.ToLower().Contains(".dll")) {
        Add-Type -TypeDefinition $code -ReferencedAssemblies System.Drawing
        $Icon = [System.IconExtractor]::Extract($SourceEXEFilePath, $IconIndexNo, $true)    
    } Else {
        [void][Reflection.Assembly]::LoadWithPartialName("System.Drawing")
        [void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
        $image = [System.Drawing.Icon]::ExtractAssociatedIcon("$($SourceEXEFilePath)").ToBitmap()
        $bitmap = new-object System.Drawing.Bitmap $image
        $bitmap.SetResolution(72,72)
        $icon = [System.Drawing.Icon]::FromHandle($bitmap.GetHicon())
    }
} Catch {
    Throw "Error extracting ICO file"
}

Try {
    $stream = [System.IO.File]::OpenWrite("$($TargetIconFilePath)")
    $icon.save($stream)
    $stream.close()
} Catch {
    Throw "Error saving ICO file [$TargetIconFilePath]"
}
Write-Host "Icon file can be found at [$TargetIconFilePath]"

# Loosely based on http://www.vistax64.com/powershell/202216-display-image-powershell.html

[void][reflection.assembly]::LoadWithPartialName("System.Windows.Forms")

$img = [System.Drawing.Image]::Fromfile($TargetIconFilePath);

# This tip from http://stackoverflow.com/questions/3358372/windows-forms-look-different-in-powershell-and-powershell-ise-why/3359274#3359274
[System.Windows.Forms.Application]::EnableVisualStyles();
$form = new-object Windows.Forms.Form
$form.Text = "Image Viewer"
$form.Width = $img.Size.Width;
$form.Height =  $img.Size.Height;
$pictureBox = new-object Windows.Forms.PictureBox
$pictureBox.Width =  $img.Size.Width;
$pictureBox.Height =  $img.Size.Height;

$pictureBox.Image = $img;
$form.controls.add($pictureBox)
$form.Add_Shown( { $form.Activate() } )
$form.ShowDialog()
#$form.Show();

示例输出：

> .\DisplayIcon.ps1 -SourceEXEFilePath 'C:\Windows\system32\shell32.dll' -TargetIconFilePath 'f:\test\Myicon.ico' -IconIndexNo 41
Icon file can be found at [f:\test\Myicon.ico]

在此处输入图片描述

笔记：

  • 该脚本是使用下面列出的来源构建的。
  • 谢谢本·N在根访问权限感谢他帮助调试代码。

资料来源：

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