Calling Legacy C function from Managed C++

[briankirkpatrick]

Forgive me if my post seems a little amateurish...

I'm requesting assistance from some of you smart folks out there to
get the managed calls write that meet the specification in the esa.h
for Esa_Init. When I make a call, VS2005 reports
"AccessViolatio nException" and refers to the 4th parameter
(EsaT_State_Han dle). I don't know how to define nor pass this
reference correctly to the legacy DLL. What am I doing wrong? Thanks
in advance!!
esa.h
*************** *************** ****
#define SIM_EXPORT DLLIMPORT

typedef struct EsaT_State EsaT_State;
typedef EsaT_State * EsaT_State_Hand le;

typedef enum EsaT_Compcode
{
EsaC_Comp_Failu re,
EsaC_Comp_Succe ss
} EsaT_Compcode;

DLLIMPORT EsaT_Compcode Esa_Init (int argc, char *argv[], int options,
EsaT_State_Hand le * esa_state_pptr) ;
*************** *************** ******
CPP Wrapper in DLL:
*************** *************
#include "stdafx.h" //Includes esa.h above

//Globals
EsaT_State_Hand le esaHandle;

extern "C" __declspec(dlle xport) int __stdcall main(int argc, char*
argv[])
{
Esa_Init(argc, argv, ESAC_OPTS_NONE, &esaHandle);
return 0;
}
*************** **************

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