/// <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));
}
/// <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>
/// 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>
///
/// </summary>
/// <returns></returns>
public bool MoveNext()
{
if (nativeEnumIdList == null)
{
return(false);
}
IntPtr item;
uint numItemsReturned;
uint itemsRequested = 1;
HResult hr = nativeEnumIdList.Next(itemsRequested, out item, out numItemsReturned);
if (numItemsReturned < itemsRequested || hr != HResult.Ok)
{
return(false);
}
currentItem = ShellObjectFactory.Create(item, nativeShellFolder);
return(true);
}
/// <summary>
/// Creates a ShellObject collection from an IShellItemArray
/// </summary>
/// <param name="iArray">IShellItemArray pointer</param>
/// <param name="readOnly">Indicates whether the collection shouldbe read-only or not</param>
internal ShellObjectCollection(IShellItemArray iArray, bool readOnly)
{
this.readOnly = readOnly;
if (iArray != null)
{
try
{
uint itemCount = 0;
iArray.GetCount(out itemCount);
content.Capacity = (int)itemCount;
for (uint index = 0; index < itemCount; index++)
{
IShellItem iShellItem = null;
iArray.GetItemAt(index, out iShellItem);
content.Add(ShellObjectFactory.Create(iShellItem));
}
}
finally
{
Marshal.ReleaseComObject(iArray);
}
}
}
/// <summary>
/// Creates a ShellObject subclass given a parsing name.
/// For file system items, this method will only accept absolute paths.
/// </summary>
/// <param name="parsingName">The parsing name of the object.</param>
/// <returns>A newly constructed ShellObject object.</returns>
public static ShellObject FromParsingName(string parsingName)
{
return(ShellObjectFactory.Create(parsingName));
}
