I'm writing a front-end for an application using COM to control it
through simple dialog boxes.  So far - awesome.  But, one question:  How
can I detect that the application fired-up through COM has not crashed
or been closed?  If I manually close the application and then continue
to run my front-end, it hangs.  I'd like to know how to test if the
object is still valid.  Thanks.

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