public bool InitFolder(IShellFolder folder, IntPtr itemPidl)
{
var relativePidl = ILShell32.ILFindLastID(itemPidl);
if (comInterface != null && messageWindow != null)
{
return(true);
}
IntPtr result = IntPtr.Zero;
IntPtr[] apidls = new IntPtr[] { itemPidl };
var refGuid = typeof(IContextMenu).GUID;
try
{
//PUIDLIST_RELATIVE ILFindChild(
// _In_ PCIDLIST_ABSOLUTE pidlParent,
// _In_ PCIDLIST_ABSOLUTE pidlChild
//);
PidlHandle handle = new PidlHandle(relativePidl);
var itemPath = handle.Path;
var relPidls = new IntPtr[] { relativePidl };
folder.GetUIObjectOf(IntPtr.Zero,
(uint)relPidls.Length,
relPidls, // [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
ref refGuid, 0, out result);
if (result != IntPtr.Zero)
{
comInterface = (IContextMenu)
Marshal.GetTypedObjectForIUnknown(result,
typeof(IContextMenu));
comInterface2 = comInterface as IContextMenu2;
comInterface3 = comInterface as IContextMenu3;
messageWindow = new MessageWindow(this);
}
else
{
var handle2 = new PidlHandle(itemPidl);
}
}
catch (Exception ex)
{
// Value does not fall within the expected range.
this.LastError = ex;
}
return(result != IntPtr.Zero);
}
// 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);
}
void Initialize(ShellItem[] items)
{
IntPtr[] pidls = new IntPtr[items.Length];
ShellItem parent = null;
for (int n = 0; n < items.Length; ++n)
{
pidls[n] = ILShell32.ILFindLastID(items[n].Pidl); // RelPidl
if (parent == null)
{
if (items[n] == ShellItem.Desktop)
{
parent = ShellItem.Desktop;
}
else
{
parent = items[n].Parent;
}
}
else
{
if (items[n].Parent != parent)
{
throw new Exception("All shell items must have the same parent");
}
}
}
IShellFolder folder = null;
IShellItem parentItem = null;
var item = items[0];
var path = item.Path;
if (parent != null && parent.IsFileSystem)
{
folder = GetIShellFolder(parent);
}
else
{
GetFolderPidlRetry(path, ref folder, ref parentItem, item.Pidl);
}
if (folder == null ||
parent != null && parent.Parent == ShellItem.Desktop && !parent.IsFileSystem && !item.IsFolder)
{
if (item.IsFolder)
{
return;
}
// GetUIObjectOf : has exited with code -1073741819 (0xc0000005) 'Access violation'.
}
if (item.IsFolder)
{
InitFolderPath(folder, parentItem, pidls[0], path);
}
else
{
InitFolder(folder, pidls[0]);
}
}