I know that Richard Grimes' book on Managed C++ is probably the most
complete ref on using managed/unmanaged C++ as a bridge to C#.

But I'm missing pieces here and there.  I'd like to find books and
references  that ramp up more gradually.  I need to fill in blanks in my
knowledge of Marshaling, etc. that is required for "IJW"-type wrapper
classes.

Does anything come to mind.  I do have MSDN, of course, but it's easier
for me to relax with a book than to stare at a screen (I do enough of that
already<g>) .

It also seems difficult to track where/why things go wrong in layered
code.  Are there any tools or tricks for this?

Again, I'm already up to speed on C++ and C#.  It's the bridge code that's
a relative mystery.

_B

PS:  How is "Essential Guide to Managed Extensions for C++"
by Siva Challa, Artur Laksberg  in this respect?  A lot of duplicated
material on C++, or does it have a lot of coverage of IJW bridges?