Hi @galtmidas:
Thanks for your comments about the poor state of the bundled code. You are spot on.
My bad. I had always intended to make the full project avaiable in its own GitHub repo and to just use the code snippets zip file for code that was actually shown in the book. Inevitably the two code sets diverged and I did not pay sufficient attention to keeping them synced.
The good news is that I have cleaned up my master code base and have copied that into the code distribution, so the zip file will now (on the upcoming beta release, anyway) contain the full, working project. (I have dropped any earlier plans to make a separate GitHub distribution available.)
Apologies for not having done this sooner. I guess I just couldn’t quite see the best way forward in managing two different code sets. It’s now just one. And it should compile. 