A call to PInvoke function has unbalanced the stack when including a C DLL into C#

Question

I have written a C DLL and some C# code to test including this DLL and executing functions from it. I am not too familiar with this process, and am receiving a PInvokeStackI

Answer 1

in C# long means 64 bit int while in C++ long means 32 bit int, you need to change your pinvoke declaration to

 [DllImport("LibNonthreaded.dll", EntryPoint = "process")]
     public unsafe static extern void process( int high, int low);

You could also try changing your C++ declaration to stdcall, that's the calling convention used by most exported functions in the Windows environment.

 __stdcall  __declspec(dllexport) void process( long high, long low );