How to hook to toolbox item selection events or How to integrate to F1 for my custom toolbox items

Hi All,

Extention type  : Isolated shell

Visual studio version : Visual studio 2010

My main goal is to be able to provide F1 help for my toolbox item , i reviewed this artical http://social.msdn.microsoft.com/Forums/vstudio/en-US/88554df3-cff1-4605-8b3f-017228b6f77f/toolbox-how-to-add-f1-help-keyword-to-toolbox-items?forum=vsx

but , the issue i am having is that when i press F1 on the toolbox item a help page is opened for the previos page i open (for example help page for ProjectNode). this made me think i need to update and track my selection with ITrackSelection interface. Am i right ?

How do i hook to the toolbox item selection change event ? 

Please advise .

Thanks