Using Unmanaged Static Libs with Managed C++

I built my multi-platform game engine, now I want to build a Windows-based tile map editor application for it. I am going to use Windows Forms in C++ to build it. Now, my Visual Studio solution has two projects: my engine that builds into a library, and my managed C++ tile editor. Now, when I include my unmanaged engine headers in my managed project, I do it like this:

#pragma#include "Catalyst.h" // includes all the necessary engine headers#pragma

Now, when I go to build my project, I 102 errors (stops after 100). Here is the first error I receive to give you an idea of what I'm getting:

Quote:

Error 78 error C3642: '_onexit_m_t _onexit_m_appdomain(_onexit_m_t)' : cannot call a function with __clrcall calling convention from native code C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\include\stdlib.h 746

All of my errors end with:

Quote:

__clrcall calling convention from native code

or

Quote:

managed type or function cannot be used in an unmanaged function