Interoprability of COM AND .NET Framework

C# support multiple inheritance?

Are private class-level variables inherited?

What does the keyword virtual mean in the method definition?

Can you prevent your class from being inherited and becoming a base class for some other classes?

What's an abstract class?

COM components are accessed from the .NET Framework by use of a runtime callable wrapper (RCW).

Specifically, .NET Framework components are accessed from COM by using a COM callable wrapper (CCW).
use the Win32 API from a .NET Framework program

using platform invoke --DllImport("