Hopefully someone can help me out with this; if what I'm asking is even
possible.

My basic question is how can I convert a void * into an Object and then
later convert it back again.

Here is a little more explanation in case there are other solutions I
could try. (I'm using .NET v1.1.)

I would like to call a managed method with an Object reference as one
of its parameters.  I am trying to make the call from managed C++.  The
managed C++ is called by a native C++ application which passes it a
const void *. (If it would help I could change this to a void *.)

I'm trying to do this because I want the native C++ code to create some
data, point to it somehow, and call the managed C++ passing in that
pointer.  Then the managed C++ does some work, and eventually calls
back to the native C++ passing it that same pointer.

The work that the managed C++ code does includes passing the pointer to
C#, so as far as I know that means it needs to be converted into
_something_ other than a void *.

I figured that a const void * was the right way to do this.  Are there
any other suggestions about how to get it done?

Is this an inherently unwise strategy?  I figure that if the native C++
is allocating the memory, it can pass the pointer to managed code and
then eventually get it back and as long as the native C++ didn't
deallocate the memory, the pointer will still be valid.

Thanks for any help!