C++: Getting the c3859 error code while compiling in a mix of C++/CLI and C++

Question

After I have done as suggested by Hans Passant in C++: Getting the "error C2065: 'pst' : undeclared identifier" while using pstsdk? (which works), my code now

Answer 1

1. Right-click your C++ project in Solution Explorer; choose Properties.
2. In the Properties dialog, expand Configuration Properties > C/C++ > Command Line
3. In Additional Options, add /Zm120

Repeat this for Debug and Release and any other configurations you have.

For more information on what this command-line option does (and what changing it means), see the /Zm documentation.