private IShellItem GetParentShellItem()
{
IShellItem parent = null;
try
{
if (_shellItem?.GetParent(out parent) != NativeMethods.S_OK)
{
parent = null;
}
}
catch (Exception e)
{
ShellLogger.Error($"ShellItem: Unable to get parent shell item: {e.Message}");
// Fall back to the root shell item via empty string
try
{
parent = GetShellItem(string.Empty);
}
catch (Exception exception)
{
ShellLogger.Error($"ShellItem: Unable to get fallback parent shell item: {exception.Message}");
}
}
return(parent);
}
private static IShellFolder CreateShellFolder(IShellItem shellItem)
{
IShellItem parentShellItem;
shellItem.GetParent(out parentShellItem);
var result = parentShellItem.BindToHandler(IntPtr.Zero, BHID.SFObject, typeof(IShellFolder).GUID);
return((IShellFolder)Marshal.GetTypedObjectForIUnknown(result, typeof(IShellFolder)));
}
// pidl array Initialize retry
public static IntPtr[] GetFolderPidlRetry(string path, ref IShellFolder folder, ref IShellItem parent,
IntPtr?itemPidl = null)
{
string path2 = null;
IntPtr pidl = IntPtr.Zero;
if (itemPidl != null)
{
pidl = itemPidl.Value;
}
else
{
var item = ShPidlSystem.FromPath(path);
pidl = item.Handle.pidl;
}
IShellItem parentInfo = null;
folder = null;
IntPtr[] pidls = EmptyPidls;
String pathCheck = null;
try
{
// if (RunningVista)
IShellItem i = ILShell32.SHCreateItemFromParsingName(path, IntPtr.Zero,
typeof(IShellItem).GUID);
i.GetParent(out parentInfo);
StringBuilder path2Ref = new StringBuilder(FileSystem.MAX_PATH);
if (Shell32.SHGetPathFromIDList(pidl, path2Ref) > 0) // == WinError.S_OK)
{
path2 = path2Ref.ToString();
}
//return Marshal.StringToHGlobalUni(result.ToString());
folder = GetIShellFolderCom <IShellFolder>(i);
IntPtr relativePidl = ILShell32.ILFindLastID(pidl);
pidls = new IntPtr[] { relativePidl };
StringBuilder resultStr = new StringBuilder(FileSystem.MAX_PATH);
if (!ILShell32.SHGetPathFromIDList(relativePidl, resultStr))
{
pathCheck = resultStr.ToString();
}
if (relativePidl != IntPtr.Zero)
{
parent = parentInfo;
}
}
catch (Exception)
{
// Free the PIDL, reset the result.
// Marshal.FreeCoTaskMem(relativePidl);
// throw new InvalidOperationException("Failed to initialise child.", exception);
folder = null;
pidls = EmptyPidls;
}
return(pidls);
}
private void Init(ShellItemKnownInfo knownInfo)
{
_loadedAttrs = knownInfo.LoadedAttributes;
_attrs = knownInfo.Attributes;
_parentParsePath = knownInfo.ParentParsePath;
_pidl = new Lazy <IdList>(() => SHGetIDListFromObject(nativeItem));
_parentFolder = new Lazy <ShellFolder>(() =>
{
var nativeParent = nativeItem.GetParent();
if (nativeParent == null)
{
return(null);
}
return(new ShellFolder(nativeParent, null, new ShellItemKnownInfo()));
});
_desktopAbsoluteParsePath = new Lazy <string>(() => nativeItem.GetDisplayName(SIGDN.DesktopAbsoluteParsing));
_parseName = new Lazy <string>(() => nativeItem.GetDisplayName(SIGDN.ParentRelativeParsing));
_parsePath = new Lazy <string>(() =>
{
if (Pidl.Parts.Count == 0) // The actual desktop
{
return("");
}
try
{
if (_parentParsePath != null)
{
string normParentPath = _parentParsePath.Trim('\\');
if (normParentPath != "")
{
normParentPath += "\\";
}
return(normParentPath + ParseName);
}
else
{
return(DesktopAbsoluteParsePath);
}
}
catch (ArgumentException)
{
IdList childPidl = new IdList(Pidl.Parts[Pidl.Parts.Count - 1]);
return(GetParentFolder().NativeFolder.GetDisplayNameOf(childPidl, SHGDNF.ForParsing));
}
});
_fullParsePath = new Lazy <string>(() =>
{
if (GetParentFolder() == null)
{
return("");
}
string parentParsePath = GetParentFolder().FullParsePath.TrimEnd('\\');
if (parentParsePath != "")
{
parentParsePath += "\\";
}
return(parentParsePath + nativeItem.GetDisplayName(SIGDN.ParentRelativeParsing));
});
/*_displayName = new Lazy<string>(() => GetParentFolder().NativeFolder.GetDisplayNameOf(
* new IdList(Pidl.Parts[Pidl.Parts.Count - 1]),
* SHGDNF.InFolder | SHGDNF.Normal));*/
_displayName = new Lazy <string>(() => nativeItem.GetDisplayName(SIGDN.NormalDisplay));
}