Access Violation Exception/Crash from C++ callback to C# function

Question

So I have a native 3rd party C++ code base I am working with (.lib and .hpp files) that I used to build a wrapper in C++/CLI for eventual use in C#.

I\'ve run into

Answer 1

I think the stack got crushed because of mismatching calling conventions: try out to put the attribute

 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]

on the callback delegate declaration.