Knovertering af gammel C kode

Hej,

Jeg har nogle gammel C kode, som jeg vil have konverteret til VS 2003.

Det er vigtigt at funktionerne bibeholder typen "unsigned char*"

--------------------------- Kode start ----------------------
// DLL needed headers
#include <windows.h>

// Headers included by the programmer.
// These headers are function dependent and will vary from time to time.
#include <stdlib.h>  // prototypes for memory allocation functions.

char *buffer = 0;
const int STRMAX = 255;


BOOL WINAPI DllEntryPoint( HINSTANCE hinstDll,
                          DWORD fdwRreason,
                          LPVOID plvReserved)
{
    switch (fdwRreason)
    {
        case DLL_THREAD_ATTACH:
        case DLL_THREAD_DETACH:
        return 1;

        case DLL_PROCESS_ATTACH:
            // Put initialization code here (Run the first time DllOpen is called)
            // for each process
            buffer = (char*)malloc(STRMAX*sizeof(char));
            if( NULL == buffer )
                return 0;
            else
                return 1;

        case DLL_PROCESS_DETACH:
          free(buffer);
          return 1 ;
    }

    return 0;
}


// Definition of the Dynamic Link Library exported functions.
// Remember to include your own functions here.!

#ifdef __cplusplus
extern "C" {
// Inserting our function prototypes
unsigned char* FAR PASCAL _export STR2UPPER (long, unsigned char*);
}
#endif



unsigned char* FAR PASCAL _export STR2UPPER(long dummy, unsigned char* argument)
{
    return strcpy( buffer, AnsiUpper(argument));
}

--------------------------- Kode slut ----------------------

Håber at nogen kan hjælpe mig :-)