Il est fastidieux de trouver l'icône correcte lorsque la DLL est composée de centaines d'icônes.
Vous pouvez utiliser le script Powershell suivant .\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();
Exemple de sortie :
> .\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]
![enter image description here]()
Notes :
- Ce script a été construit en utilisant les sources listées ci-dessous.
- Merci à Ben N en Accès aux racines pour son aide à déboguer le code.
Sources :
