/// <summary>
/// Release the native and managed objects
/// </summary>
/// <param name="disposing">Indicates that this is being called from Dispose(), rather than the finalizer.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
_internalName = null;
_internalParsingName = null;
properties = null;
thumbnail = null;
parentShellObject = null;
}
if (properties != null)
{
properties.Dispose();
}
if (_internalPIDL != IntPtr.Zero)
{
ShellNativeMethods.ILFree(_internalPIDL);
_internalPIDL = IntPtr.Zero;
}
if (nativeShellItem != null)
{
Marshal.ReleaseComObject(nativeShellItem);
nativeShellItem = null;
}
if (NativePropertyStore != null)
{
Marshal.ReleaseComObject(NativePropertyStore);
NativePropertyStore = null;
}
}
/// <summary>
/// Start the watcher and begin receiving change notifications.
/// <remarks>
/// If the watcher is running, has no effect.
/// Registration for notifications should be done before this is called.
/// </remarks>
/// </summary>
public void Start()
{
if (Running)
{
return;
}
#region Registration
ShellNativeMethods.SHChangeNotifyEntry entry = new ShellNativeMethods.SHChangeNotifyEntry();
entry.recursively = _recursive;
entry.pIdl = _shellObject.PIDL;
_registrationId = ShellNativeMethods.SHChangeNotifyRegister(
_listenerHandle,
ShellNativeMethods.ShellChangeNotifyEventSource.ShellLevel | ShellNativeMethods.ShellChangeNotifyEventSource.InterruptLevel | ShellNativeMethods.ShellChangeNotifyEventSource.NewDelivery,
_manager.RegisteredTypes, //ShellObjectChangeTypes.AllEventsMask,
_message,
1,
ref entry);
if (_registrationId == 0)
{
throw new Win32Exception(LocalizedMessages.ShellObjectWatcherRegisterFailed);
}
#endregion
Running = true;
}
internal static IntPtr PidlFromUnknown(IntPtr unknown)
{
IntPtr pidl;
int retCode = ShellNativeMethods.SHGetIDListFromObject(unknown, out pidl);
return(CoreErrorHelper.Succeeded(retCode) ? pidl : IntPtr.Zero);
}
/// <summary>
/// Creates a shell library in a given local folder,
/// using the given shell library name.
/// </summary>
/// <param name="libraryName">The name of this library</param>
/// <param name="folderPath">The path to the local folder</param>
/// <param name="overwrite">Override an existing library with the same name</param>
public ShellLibrary(string libraryName, string folderPath, bool overwrite)
: this()
{
if (string.IsNullOrEmpty(libraryName))
{
throw new ArgumentException(LocalizedMessages.ShellLibraryEmptyName, "libraryName");
}
if (!Directory.Exists(folderPath))
{
throw new DirectoryNotFoundException(LocalizedMessages.ShellLibraryFolderNotFound);
}
this.Name = libraryName;
ShellNativeMethods.LibrarySaveOptions flags = overwrite ?
ShellNativeMethods.LibrarySaveOptions.OverrideExisting :
ShellNativeMethods.LibrarySaveOptions.FailIfThere;
Guid guid = new Guid(ShellIIDGuid.IShellItem);
IShellItem shellItemIn;
ShellNativeMethods.SHCreateItemFromParsingName(folderPath, IntPtr.Zero, ref guid, out shellItemIn);
nativeShellLibrary = (INativeShellLibrary) new ShellLibraryCoClass();
nativeShellLibrary.Save(shellItemIn, libraryName, flags, out nativeShellItem);
}
private static void ShowManageLibraryUI(ShellLibrary shellLibrary, IntPtr windowHandle, string title, string instruction, bool allowAllLocations)
{
int hr = 0;
Thread staWorker = new Thread(() =>
{
hr = ShellNativeMethods.SHShowManageLibraryUI(
shellLibrary.NativeShellItem,
windowHandle,
title,
instruction,
allowAllLocations ?
ShellNativeMethods.LibraryManageDialogOptions.NonIndexableLocationWarning :
ShellNativeMethods.LibraryManageDialogOptions.Default);
});
staWorker.SetApartmentState(ApartmentState.STA);
staWorker.Start();
staWorker.Join();
if (!CoreErrorHelper.Succeeded(hr))
{
throw new ShellException(hr);
}
}
/// <summary>
/// Creates a ShellObjectCollection from an IDataObject passed during Drop operation.
/// </summary>
/// <param name="dataObject">An object that implements the IDataObject COM interface.</param>
/// <returns>ShellObjectCollection created from the given IDataObject</returns>
public static ShellObjectCollection FromDataObject(System.Runtime.InteropServices.ComTypes.IDataObject dataObject)
{
IShellItemArray shellItemArray;
Guid iid = new Guid(ShellIIDGuid.IShellItemArray);
ShellNativeMethods.SHCreateShellItemArrayFromDataObject(dataObject, ref iid, out shellItemArray);
return(new ShellObjectCollection(shellItemArray, true));
}
internal ChangeNotifyLock(Message message)
{
IntPtr pidl;
IntPtr lockId = ShellNativeMethods.SHChangeNotification_Lock(
message.WParam, (int)message.LParam, out pidl, out _event);
try
{
Trace.TraceInformation("Message: {0}", (ShellObjectChangeTypes)_event);
var notifyStruct = pidl.MarshalAs <ShellNativeMethods.ShellNotifyStruct>();
Guid guid = new Guid(ShellIIDGuid.IShellItem2);
if (notifyStruct.item1 != IntPtr.Zero &&
(((ShellObjectChangeTypes)_event) & ShellObjectChangeTypes.SystemImageUpdate) == ShellObjectChangeTypes.None)
{
IShellItem2 nativeShellItem;
if (CoreErrorHelper.Succeeded(ShellNativeMethods.SHCreateItemFromIDList(
notifyStruct.item1, ref guid, out nativeShellItem)))
{
string name;
nativeShellItem.GetDisplayName(ShellNativeMethods.ShellItemDesignNameOptions.FileSystemPath,
out name);
ItemName = name;
Trace.TraceInformation("Item1: {0}", ItemName);
}
}
else
{
ImageIndex = notifyStruct.item1.ToInt32();
}
if (notifyStruct.item2 != IntPtr.Zero)
{
IShellItem2 nativeShellItem;
if (CoreErrorHelper.Succeeded(ShellNativeMethods.SHCreateItemFromIDList(
notifyStruct.item2, ref guid, out nativeShellItem)))
{
string name;
nativeShellItem.GetDisplayName(ShellNativeMethods.ShellItemDesignNameOptions.FileSystemPath,
out name);
ItemName2 = name;
Trace.TraceInformation("Item2: {0}", ItemName2);
}
}
}
finally
{
if (lockId != IntPtr.Zero)
{
ShellNativeMethods.SHChangeNotification_Unlock(lockId);
}
}
}
/// <summary>
/// Returns a known folder given its shell namespace parsing name, such as
/// <c>::{645FF040-5081-101B-9F08-00AA002F954E}</c> for the Recycle Bin.
/// </summary>
/// <param name="parsingName">The parsing name (or path) for the requested known folder.</param>
/// <returns>A known folder representing the specified name.</returns>
/// <exception cref="System.ArgumentException">Thrown if the given parsing name is invalid.</exception>
public static IKnownFolder FromParsingName(string parsingName)
{
if (parsingName == null)
{
throw new ArgumentNullException("parsingName");
}
IntPtr pidl = IntPtr.Zero;
IntPtr pidl2 = IntPtr.Zero;
try
{
pidl = ShellHelper.PidlFromParsingName(parsingName);
if (pidl == IntPtr.Zero)
{
throw new ArgumentException(LocalizedMessages.KnownFolderParsingName, "parsingName");
}
// It's probably a special folder, try to get it
IKnownFolderNative knownFolderNative = KnownFolderHelper.FromPIDL(pidl);
if (knownFolderNative != null)
{
IKnownFolder kf = KnownFolderHelper.GetKnownFolder(knownFolderNative);
if (kf == null)
{
throw new ArgumentException(LocalizedMessages.KnownFolderParsingName, "parsingName");
}
return(kf);
}
// No physical storage was found for this known folder
// We'll try again with a different name
// try one more time with a trailing \0
pidl2 = ShellHelper.PidlFromParsingName(parsingName.PadRight(1, '\0'));
if (pidl2 == IntPtr.Zero)
{
throw new ArgumentException(LocalizedMessages.KnownFolderParsingName, "parsingName");
}
IKnownFolder kf2 = KnownFolderHelper.GetKnownFolder(KnownFolderHelper.FromPIDL(pidl));
if (kf2 == null)
{
throw new ArgumentException(LocalizedMessages.KnownFolderParsingName, "parsingName");
}
return(kf2);
}
finally
{
ShellNativeMethods.ILFree(pidl);
ShellNativeMethods.ILFree(pidl2);
}
}
internal static IntPtr PidlFromParsingName(string name)
{
IntPtr pidl;
ShellNativeMethods.ShellFileGetAttributesOptions sfgao;
int retCode = ShellNativeMethods.SHParseDisplayName(
name, IntPtr.Zero, out pidl, (ShellNativeMethods.ShellFileGetAttributesOptions) 0,
out sfgao);
return(CoreErrorHelper.Succeeded(retCode) ? pidl : IntPtr.Zero);
}
private Bitmap GetBitmap(System.Windows.Size size)
{
IntPtr hBitmap = GetHBitmap(size);
// return a System.Drawing.Bitmap from the hBitmap
Bitmap returnValue = Bitmap.FromHbitmap(hBitmap);
// delete HBitmap to avoid memory leaks
ShellNativeMethods.DeleteObject(hBitmap);
return(returnValue);
}
/// <summary>
/// Stop the watcher and prevent further notifications from being received.
/// <remarks>If the watcher is not running, this has no effect.</remarks>
/// </summary>
public void Stop()
{
if (!Running)
{
return;
}
if (_registrationId > 0)
{
ShellNativeMethods.SHChangeNotifyDeregister(_registrationId);
_registrationId = 0;
}
Running = false;
}
// This is a work around for the STA thread bug. This will execute the call on a non-sta thread, then return the result
private static bool IsVirtualKnownFolder(IShellItem2 nativeShellItem2)
{
IntPtr pidl = IntPtr.Zero;
try
{
IKnownFolderNative nativeFolder = null;
KnownFoldersSafeNativeMethods.NativeFolderDefinition definition = new KnownFoldersSafeNativeMethods.NativeFolderDefinition();
// We found a bug where the enumeration of shell folders was
// not reliable when called from a STA thread - it would return
// different results the first time vs the other times.
//
// This is a work around. We call FindFolderFromIDList on a
// worker MTA thread instead of the main STA thread.
//
// Ultimately, it would be a very good idea to replace the 'getting shell object' logic
// to get a list of pidl's in 1 step, then look up their information in a 2nd, rather than
// looking them up as we get them. This would replace the need for the work around.
object padlock = new object();
lock (padlock)
{
IntPtr unknown = Marshal.GetIUnknownForObject(nativeShellItem2);
ThreadPool.QueueUserWorkItem(obj =>
{
lock (padlock)
{
pidl = ShellHelper.PidlFromUnknown(unknown);
new KnownFolderManagerClass().FindFolderFromIDList(pidl, out nativeFolder);
if (nativeFolder != null)
{
nativeFolder.GetFolderDefinition(out definition);
}
Monitor.Pulse(padlock);
}
});
Monitor.Wait(padlock);
}
return(nativeFolder != null && definition.category == FolderCategory.Virtual);
}
finally
{
ShellNativeMethods.ILFree(pidl);
}
}
/// <summary>
/// Enumerates through contents of the ShellObjectContainer
/// </summary>
/// <returns>Enumerated contents</returns>
public IEnumerator <ShellObject> GetEnumerator()
{
if (NativeShellFolder == null)
{
if (desktopFolderEnumeration == null)
{
ShellNativeMethods.SHGetDesktopFolder(out desktopFolderEnumeration);
}
nativeShellFolder = desktopFolderEnumeration;
}
return(new ShellFolderItems(this));
}
/// <summary>
/// Constructs a new Shell object from IDList pointer
/// </summary>
/// <param name="idListPtr"></param>
/// <returns></returns>
internal static ShellObject Create(IntPtr idListPtr)
{
// Throw exception if not running on Win7 or newer.
CoreHelpers.ThrowIfNotVista();
Guid guid = new Guid(ShellIIDGuid.IShellItem2);
IShellItem2 nativeShellItem;
int retCode = ShellNativeMethods.SHCreateItemFromIDList(idListPtr, ref guid, out nativeShellItem);
if (!CoreErrorHelper.Succeeded(retCode))
{
return(null);
}
return(ShellObjectFactory.Create(nativeShellItem));
}
/// <summary>
/// Constructs a new Shell object from IDList pointer
/// </summary>
/// <param name="idListPtr"></param>
/// <param name="parent"></param>
/// <returns></returns>
internal static ShellObject Create(IntPtr idListPtr, ShellContainer parent)
{
IShellItem nativeShellItem;
int retCode = ShellNativeMethods.SHCreateShellItem(
IntPtr.Zero,
parent.NativeShellFolder,
idListPtr, out nativeShellItem);
if (!CoreErrorHelper.Succeeded(retCode))
{
return(null);
}
return(ShellObjectFactory.Create(nativeShellItem));
}
private BitmapSource GetBitmapSource(System.Windows.Size size)
{
IntPtr hBitmap = GetHBitmap(size);
// return a System.Media.Imaging.BitmapSource
// Use interop to create a BitmapSource from hBitmap.
BitmapSource returnValue = Imaging.CreateBitmapSourceFromHBitmap(
hBitmap,
IntPtr.Zero,
System.Windows.Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
// delete HBitmap to avoid memory leaks
ShellNativeMethods.DeleteObject(hBitmap);
return(returnValue);
}
/// <summary>
/// Creates a ShellObject given a parsing name
/// </summary>
/// <param name="parsingName"></param>
/// <returns>A newly constructed ShellObject object</returns>
internal static ShellObject Create(string parsingName)
{
if (string.IsNullOrEmpty(parsingName))
{
throw new ArgumentNullException("parsingName");
}
// Create a native shellitem from our path
IShellItem2 nativeShellItem;
Guid guid = new Guid(ShellIIDGuid.IShellItem2);
int retCode = ShellNativeMethods.SHCreateItemFromParsingName(parsingName, IntPtr.Zero, ref guid, out nativeShellItem);
if (!CoreErrorHelper.Succeeded(retCode))
{
throw new ShellException(LocalizedMessages.ShellObjectFactoryUnableToCreateItem, Marshal.GetExceptionForHR(retCode));
}
return(ShellObjectFactory.Create(nativeShellItem));
}
/// <summary>
/// Returns the hash code of the object.
/// </summary>
/// <returns></returns>
public override int GetHashCode()
{
if (!hashValue.HasValue)
{
uint size = ShellNativeMethods.ILGetSize(PIDL);
if (size != 0)
{
byte[] pidlData = new byte[size];
Marshal.Copy(PIDL, pidlData, 0, (int)size);
byte[] hashData = ShellObject.hashProvider.ComputeHash(pidlData);
hashValue = BitConverter.ToInt32(hashData, 0);
}
else
{
hashValue = 0;
}
}
return(hashValue.Value);
}
/// <summary>
/// Load the library using a number of options
/// </summary>
/// <param name="libraryName">The name of the library</param>
/// <param name="isReadOnly">If <B>true</B>, loads the library in read-only mode.</param>
/// <returns>A ShellLibrary Object</returns>
public static ShellLibrary Load(string libraryName, bool isReadOnly)
{
CoreHelpers.ThrowIfNotWin7();
IKnownFolder kf = KnownFolders.Libraries;
string librariesFolderPath = (kf != null) ? kf.Path : string.Empty;
Guid guid = new Guid(ShellIIDGuid.IShellItem);
IShellItem nativeShellItem;
string shellItemPath = System.IO.Path.Combine(librariesFolderPath, libraryName + FileExtension);
int hr = ShellNativeMethods.SHCreateItemFromParsingName(shellItemPath, IntPtr.Zero, ref guid, out nativeShellItem);
if (!CoreErrorHelper.Succeeded(hr))
{
throw new ShellException(hr);
}
INativeShellLibrary nativeShellLibrary = (INativeShellLibrary) new ShellLibraryCoClass();
AccessModes flags = isReadOnly ?
AccessModes.Read :
AccessModes.ReadWrite;
nativeShellLibrary.LoadLibraryFromItem(nativeShellItem, flags);
ShellLibrary library = new ShellLibrary(nativeShellLibrary);
try
{
library.nativeShellItem = (IShellItem2)nativeShellItem;
library.Name = libraryName;
return(library);
}
catch
{
library.Dispose();
throw;
}
}
public HResult GetAttributes(ShellNativeMethods.ShellItemAttributeOptions dwAttribFlags, ShellNativeMethods.ShellFileGetAttributesOptions sfgaoMask, out ShellNativeMethods.ShellFileGetAttributesOptions psfgaoAttribs)
{
throw new NotSupportedException();
}
internal override ShellNativeMethods.FileOpenOptions GetDerivedOptionFlags(ShellNativeMethods.FileOpenOptions flags)
{
if (multiselect)
{
flags |= ShellNativeMethods.FileOpenOptions.AllowMultiSelect;
}
if (isFolderPicker)
{
flags |= ShellNativeMethods.FileOpenOptions.PickFolders;
}
if (!allowNonFileSystem)
{
flags |= ShellNativeMethods.FileOpenOptions.ForceFilesystem;
}
else if (allowNonFileSystem)
{
flags |= ShellNativeMethods.FileOpenOptions.AllNonStorageItems;
}
return flags;
}
internal abstract ShellNativeMethods.FileOpenOptions GetDerivedOptionFlags(ShellNativeMethods.FileOpenOptions flags);
public void OnOverwrite(IFileDialog pfd, IShellItem psi, out ShellNativeMethods.FileDialogEventOverwriteResponse pResponse)
{
// Don't accept or reject the dialog, keep default settings
pResponse = ShellNativeMethods.FileDialogEventOverwriteResponse.Default;
}
public void OnShareViolation(
IFileDialog pfd,
IShellItem psi,
out ShellNativeMethods.FileDialogEventShareViolationResponse pResponse)
{
// Do nothing: we will ignore share violations,
// and don't register
// for them, so this method should never be called.
pResponse = ShellNativeMethods.FileDialogEventShareViolationResponse.Accept;
}
internal override ShellNativeMethods.FileOpenOptions GetDerivedOptionFlags(ShellNativeMethods.FileOpenOptions flags)
{
if (overwritePrompt)
{
flags |= ShellNativeMethods.FileOpenOptions.OverwritePrompt;
}
if (createPrompt)
{
flags |= ShellNativeMethods.FileOpenOptions.CreatePrompt;
}
if (!isExpandedMode)
{
flags |= ShellNativeMethods.FileOpenOptions.DefaultNoMiniMode;
}
if (alwaysAppendDefaultExtension)
{
flags |= ShellNativeMethods.FileOpenOptions.StrictFileTypes;
}
return flags;
}
/// <summary>
/// Builds the data for the CFSTR_SHELLIDLIST Drag and Clipboard data format from the
/// ShellObjects in the collection.
/// </summary>
/// <returns>A memory stream containing the drag/drop data.</returns>
public MemoryStream BuildShellIDList()
{
if (content.Count == 0)
{
throw new InvalidOperationException(LocalizedMessages.ShellObjectCollectionEmptyCollection);
}
MemoryStream mstream = new MemoryStream();
try
{
BinaryWriter bwriter = new BinaryWriter(mstream);
// number of IDLs to be written (shell objects + parent folder)
uint itemCount = (uint)(content.Count + 1);
// grab the object IDLs
IntPtr[] idls = new IntPtr[itemCount];
for (int index = 0; index < itemCount; index++)
{
if (index == 0)
{
// Because the ShellObjects passed in may be from anywhere, the
// parent folder reference must be the desktop.
idls[index] = ((ShellObject)KnownFolders.Desktop).PIDL;
}
else
{
idls[index] = content[index - 1].PIDL;
}
}
// calculate offset array (folder IDL + item IDLs)
uint[] offsets = new uint[itemCount + 1];
for (int index = 0; index < itemCount; index++)
{
if (index == 0)
{
// first offset equals size of CIDA header data
offsets[0] = (uint)(sizeof(uint) * (offsets.Length + 1));
}
else
{
offsets[index] = offsets[index - 1] + ShellNativeMethods.ILGetSize(idls[index - 1]);
}
}
// Fill out the CIDA header
//
// typedef struct _IDA {
// UINT cidl; // number of relative IDList
// UINT aoffset[1]; // [0]: folder IDList, [1]-[cidl]: item IDList
// } CIDA, * LPIDA;
//
bwriter.Write(content.Count);
foreach (uint offset in offsets)
{
bwriter.Write(offset);
}
// copy idls
foreach (IntPtr idl in idls)
{
byte[] data = new byte[ShellNativeMethods.ILGetSize(idl)];
Marshal.Copy(idl, data, 0, data.Length);
bwriter.Write(data, 0, data.Length);
}
}
catch
{
mstream.Dispose();
throw;
}
// return CIDA stream
return(mstream);
}