Windows 7 Taskbar - the undocumented MSTaskListWClass !!!

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Hello everybody.
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Sometimes it is needed to programmatically access the windows shells taskbar. In previous versions of Windows, it was firstly the Tab-Control, then (for example in XP) the Toolbar. E.g. in XP, to access the taskbar (which is actually nothing more than a standard Toolbar) you should find Explorer.exes windows in this hierarchy (of their classnames) : Shell_TrayWnd -> RebarWindow32 -> MSTaskSwWClass -> ToolbarWindow32. The last one - window named "Running Applications" of class "ToolbarWindow32" is the one which is usually subclassed.
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Now in Windows 7 things changed. The last window in that chain - the actual taskbar - is not standard Toolbar (ToolbarWindow32) anymore. It is the window with MSTaskListWClass class now! This window does not react on any Toolbar messages like TB_BUTTONCOUNT or TB_HITTEST, etc. So it is impossible to interact with taskbar anymore!
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Does anyone have any idea of how to access the Taskbar in Windows 7? Google gives nothing on MSTaskListWClass. Where can the documentation be found?
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P.S.: The ITaskbarList interface is very poor, so it aint an option :)
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Thank you in advance.



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