Solidworks Vb.Net "AddIn" - Part Destroy Handler

Can anybody help?

 

I have the following lines of code in a Vb.Net "Addin" that works great!

 

mActivePart = odoc

AddHandler mActivePart.FileSaveNotify, partSaveHandler

 

Does anybody know the Vb.Net code for File Closed (Destroyed)?

 

for example

AddHandler mActivePart.FileDestroyNotify, partDestroyHandler ????

 

Many thanks in advance!

 

Darren