Re: C# and C++

The refered C++ common project isn't required, you can just remove it
from the solution.
What's you need is the tlb file to register the
GoogleDesktopDisplayAPILib, you can download the WIndows SDK from
microsoft website for free midl.exe compile to complie the IDL file to
tlb then register it as the readme file of C# Sample said. Then you can
use the C# express to compile the project and work on it.