/////////////////////////////////////////////////////////////////////
// Marshaling.cpp - Demonstrates use of marshaling and PInvoke     //
//                                                                 //
// Jim Fawcett, CSE775 - Distributed Objects, Spring 2003          //
/////////////////////////////////////////////////////////////////////
// Built with Win32 Project wizard                                 //
//   - place MarshalingLib.dll in project and debug directories    //
/////////////////////////////////////////////////////////////////////

//#using <mscorlib.dll>
//#using "c:/su/CSE775/code/managedCPP/MarshalingLib/Debug/MarshalingLib.dll"
using namespace System;
using namespace System::Runtime::InteropServices;

#include <iostream>
#include <string>
using namespace std;

[ DllImport(
    "MarshalingLib.dll", CharSet=CharSet::Ansi,
    EntryPoint="?demoTransfer@CMarshalingLib@@QAEXPBD@Z"
  )
]
extern "C" void CallDemoTransfer([MarshalAs(UnmanagedType::LPStr)] String^ pMsg);

[ DllImport("MarshalingLib.dll")]
extern "C" void CreateMLobj(IntPtr& pObj);

[ DllImport("MarshalingLib.dll")]
extern "C" void DeleteMLobj(IntPtr pObj);

int main()
{
  cout << "\n  Demonstrate PInvoke with Specified Marshaling "
       << "\n ===============================================\n";
  cout.flush();

  IntPtr pMLobj;
  CreateMLobj(pMLobj);
  String^ pMsg = gcnew String("Hello from Managed World");
  CallDemoTransfer(pMsg);
  DeleteMLobj(pMLobj);
  cout << "\n\n";
}



  Demonstrate PInvoke with Specified Marshaling 
 ===============================================

  creating instance of CMarshalingLib
  in demoTransfer: Hello from Managed World
  destroying instance of CMarshalingLib

#ifndef MARSHALINGLIB_H
#define MARSHALINGLIB_H
/////////////////////////////////////////////////////////////////////
// MarshalingLib.H - Demonstrates use of marshaling and PInvoke    //
//                                                                 //
// Jim Fawcett, CSE775 - Distributed Objects, Spring 2003          //
/////////////////////////////////////////////////////////////////////
// Built with Win32 Project wizard                                 //
/////////////////////////////////////////////////////////////////////

#include <iostream>

#ifdef MARSHALINGLIB_EXPORTS
#define MARSHALINGLIB_API __declspec(dllexport)
#else
#define MARSHALINGLIB_API __declspec(dllimport)
#endif

class MARSHALINGLIB_API CMarshalingLib {
public:
  void demoTransfer(const char* str)
  {
    std::cout << "\n  in demoTransfer: " << str;
  }
};

extern "C" MARSHALINGLIB_API void CreateMLobj(CMarshalingLib*& pObj)
{
  std::cout << "\n  creating instance of CMarshalingLib";
  pObj = new CMarshalingLib();
}

extern "C" MARSHALINGLIB_API void DeleteMLobj(CMarshalingLib* pObj)
{
  std::cout << "\n  destroying instance of CMarshalingLib";
  delete pObj;
}

#endif

/////////////////////////////////////////////////////////////////////
// MarshalingLib.cpp - Demonstrates use of Marshaling and PInvoke
//

#include "stdafx.h"
#include "MarshalingLib.h"

BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
           )
{
  switch (ul_reason_for_call)
  {
  case DLL_PROCESS_ATTACH:
  case DLL_THREAD_ATTACH:
  case DLL_THREAD_DETACH:
  case DLL_PROCESS_DETACH:
    break;
  }
    return TRUE;
}