TreeNode InsertNode(TreeNode parent, ShellItem folder, string displayName)
{
ShellItem parentFolder = (ShellItem)parent.Tag;
IntPtr folderRelPidl = Shell32.ILFindLastID(folder.Pidl);
TreeNode result = null;
foreach (TreeNode child in parent.Nodes)
{
ShellItem childFolder = (ShellItem)child.Tag;
IntPtr childRelPidl = Shell32.ILFindLastID(childFolder.Pidl);
short compare = parentFolder.GetIShellFolder().CompareIDs(0,
folderRelPidl, childRelPidl);
if (compare < 0)
{
result = parent.Nodes.Insert(child.Index, displayName);
break;
}
}
if (result == null)
{
result = parent.Nodes.Add(displayName);
}
return(result);
}
void Initialize(ShellItem[] items)
{
IntPtr[] pidls = new IntPtr[items.Length];
ShellItem parent = null;
IntPtr result;
for (int n = 0; n < items.Length; ++n)
{
pidls[n] = Shell32.ILFindLastID(items[n].Pidl);
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");
}
}
}
parent.GetIShellFolder().GetUIObjectOf(IntPtr.Zero,
(uint)pidls.Length, pidls,
typeof(IContextMenu).GUID, 0, out result);
m_ComInterface = (IContextMenu)
Marshal.GetTypedObjectForIUnknown(result,
typeof(IContextMenu));
m_ComInterface2 = m_ComInterface as IContextMenu2;
m_ComInterface3 = m_ComInterface as IContextMenu3;
m_MessageWindow = new MessageWindow(this);
}
