C# delegate for C++ callback

Question

I think I have basically understood how to write c# delegates for callbacks, but this one is confusing me. The c++ definition is as follows:

typedef int (__s         


        

Answer 1

[UnmanagedFunctionPointerAttribute(CallingConvention.StdCall)]
unsafe delegate int CallbackDelegate (int lCode, int lParamSize, IntPtr pParam);

If .NET assumes cdecl instead of stdcall, your stack will most assuredly be hosed.