[API] Win32 Resources - List Icon Resource Names
- From: "Mythran" <kip_potter@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 21 Dec 2005 16:27:33 -0800
I wrote some code that is supposed to enumerate through the specified file's win32 resources and return a string-array of all icon names. When it runs, it returns a string-array with a bunch of numbers in sequential order (1-55 when ran against iexplore.exe).
When I open up iexplore.exe in Visual Studio, I see 23 icons. Each icon has 1 or more sizes of the icon...I'm assuming that there are, in fact, 55 icon resources in iexplore.exe, and the code I wrote is returning the indexes of the icons? If so, how do I get the names/identifiers for the icons?
The following is my code for the ResourceExtracter class that hopefully shows what I am trying to do...To use, just create a ResourceExtracter instance and call GetIconNames passing the path to an exe or dll file (C:\Program Files\Internet Explorer\iexplore.exe is the path I am using to test with).
Thanks in advance :)
-------------------------------------------------------------------------
using System; using System.Runtime.InteropServices; using System.Collections; using System.ComponentModel;
namespace Tests.Applications.ResourceViewer.UI
{
/// <summary>
/// Provides the methods to extract resources from a Win32 binary.
/// </summary>
public class ResourceExtracter
{#region Private Members
// =================================================================
// Private Members
// =================================================================
private enum ResourceType : int
{
Cursor = 0x00000001,
Bitmap = 0x00000002,
Icon = 0x00000003,
Menu = 0x00000004,
Dialog = 0x00000005,
String = 0x00000006,
FontDir = 0x00000007,
Font = 0x00000008,
Accelerator = 0x00000009,
RcData = 0x0000000a,
MessageTable = 0x0000000b
} private const int LOAD_LIBRARY_AS_DATAFILE = 0x00000002;
private const int ERROR_RESOURCE_TYPE_NOT_FOUND = 0x00000715;private string mFilePath = null;
private delegate bool EnumResNameDelegate(
IntPtr ModuleHandle,
IntPtr Type,
IntPtr Name,
IntPtr Param
);
#endregion#region API Declarations
// =================================================================
// API Declarations
// =================================================================
[DllImport("kernel32.dll", SetLastError = true)]
private static extern IntPtr LoadLibraryEx(
string FileName,
IntPtr FileHandle,
uint Flags
); [DllImport("kernel32.dll", SetLastError = true)]
private static extern bool FreeLibrary(IntPtr ModuleHandle); [
DllImport(
"kernel32.dll",
EntryPoint = "EnumResourceNamesW",
CharSet = CharSet.Unicode,
SetLastError = true
)
]
private static extern bool EnumResourceNamesWithName(
IntPtr ModuleHandle,
ResourceType Type,
EnumResNameDelegate EnumFunc,
IntPtr Param
); [DllImport("kernel32.dll", SetLastError = true)]
private static extern IntPtr FindResource(
IntPtr ModuleHandle,
string Name,
string Type
); [
DllImport(
"kernel32.dll",
EntryPoint = "EnumResourceNamesW",
CharSet = CharSet.Unicode,
SetLastError = true
)
]
private static extern bool EnumResourceNamesWithID(
IntPtr ModuleHandle,
ResourceType Type,
EnumResNameDelegate EnumFunc,
IntPtr Param
);
#endregion#region Constructors / Destructors
// =================================================================
// Constructors / Destructors
// =================================================================
/// <summary>
/// Creates a new instance of the <see cref="ResourceExtracter"/>
/// class.
/// </summary>
/// <param name="FilePath"></param>
public ResourceExtracter(string FilePath)
{
mFilePath = FilePath;
}
#endregion
#region Public Properties
// =================================================================
// Public Properties
// =================================================================
/// <summary>
/// Specifies the path of the Win32 binary.
/// </summary>
public string FilePath
{
get {
return mFilePath;
}
set {
mFilePath = value;
}
}
#endregion#region Public Methods
// =================================================================
// Public Methods
// =================================================================
/// <summary>
/// Gets the icon resource names for the current file.
/// </summary>
public string[] GetIconNames()
{
return GetResourceNames(ResourceType.Icon);
} /// <summary>
/// Gets the string resource names for the current file.
/// </summary>
public string[] GetStringNames()
{
return GetResourceNames(ResourceType.String);
}
#endregion#region Private Methods
// =================================================================
// Private Methods
// =================================================================
private string[] GetResourceNames(ResourceType Type)
{
ArrayList names = new ArrayList(); // Get the handle to the library.
IntPtr moduleHandle = GetLibraryModule(this.FilePath); try {
FillResourceNames(moduleHandle, Type, names);
} finally {
// Cleanup.
FreeLibrary(moduleHandle);
} // Convert the names into a string-array and return it.
return (string[]) names.ToArray(typeof(string));
}/// <summary>
/// Load the specified library and return the handle.
/// </summary>
/// <param name="LibraryPath">
/// The path to the library to load (.dll or .exe).
/// </param>
/// <returns>
/// Returns an <see cref="IntPtr"/> that represents the handle to
/// the library module loaded.
/// </returns>
private IntPtr GetLibraryModule(string LibraryPath)
{
// Load the library.
IntPtr result = LoadLibraryEx(
LibraryPath,
IntPtr.Zero,
LOAD_LIBRARY_AS_DATAFILE
);
if (result == IntPtr.Zero) {
// Error occurred.
throw new Win32Exception(Marshal.GetLastWin32Error());
} else {
return result;
}
}/// <summary>
/// Fills the <paramref name="List"/> with all of the resource names
/// of the specified <paramref name="ResourceType"/>.
/// </summary>
/// <param name="ModuleHandle">
/// The handle to the library module that contains the resource(s)
/// to retrieve.
/// </param>
/// <param name="Type">The type of resource to retrieve.</param>
/// <param name="List">
/// The <see cref="ArrayList"/> to place the results into.
/// </param>
private void FillResourceNames(
IntPtr ModuleHandle,
ResourceType Type,
ArrayList List
)
{
// Get the ptr to the ArrayList.
GCHandle listHandle = GCHandle.Alloc(List);
try {
// Enumerate the resource names.
bool result = EnumResourceNamesWithID(
ModuleHandle,
Type,
new EnumResNameDelegate(EnumRes),
(IntPtr) listHandle
);// Check for errors.
if (!result) {
int code = Marshal.GetLastWin32Error();
if (code != ERROR_RESOURCE_TYPE_NOT_FOUND) {
// Raise a Win32Exception for any errors except
// for when the specified resource type could not
// be found.
throw new Win32Exception(code);
}
}
} finally {
// Release the allocated ArrayList.
listHandle.Free();
}
}
private static bool IsIntResource(IntPtr Value)
{
return (((ulong) Value) >> 16) == 0;
} private bool EnumRes(
IntPtr ModuleHandle,
IntPtr Type,
IntPtr Name,
IntPtr Param
)
{
GCHandle listHandle = (GCHandle) Param;
ArrayList list = (ArrayList) listHandle.Target; string name = null;
if (IsIntResource(Name)) {
name = ((int) Name).ToString();
} else {
name = Marshal.PtrToStringAuto(Name);
} list.Add(name);
return true;
}
#endregion} }
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