How to pass a C# function as a parameter to a native function?

Question

C++ / C#

The library has a certain function, let's say Func, I have this function declared in C#:

[DllImport("library.dll")]
[SuppressUnmanagedCodeSecurity()]
public static extern void Func(тут нужна ссылка на функцию);

In the .h file, it is declared like this:
void (LIBCALLBACK *func)(void);
I think simple delegates are indispensable here.

Answer 1

msdn.microsoft.com/en-us/library/ac7ay120(v=vs.110...
msdn.microsoft.com/en-us/library/843s5s5x(v=vs.110...