Windows 2000-like TreeView in File Explorer?

[Anixx]

Here is where I was able to arrive by manipulating window styles:

• NamespaceTreeControl has WS_EX_TOOLWINDOW, WS_EX_STATICEDGE, WS_SYSMENU, WS_CAPTION

• TreeView (SysListView32) has no ClientEdge.

What work is needeed:

• To remove the caption text (it says "Namespace tree", so can remain actually).

• To hide the navigation pane on pressing X button.

Also, since without Command Bar toggling the Navigation Pane is impossible, it is highly desirable to add a navigation pane toggle entry in the pull-down menu.