Hi All,

I have a C++ DLL which basically calls a legacy C library which
decrypts some data.

I have defined the DLL as below.

extern "C" __declspec(dllexport) void  __stdcall init()
{
    init_decoder();
    return;
}

extern "C" __declspec(dllexport) short * __stdcall decode(unsigned
char serial[10])
{

    short * decoded_value = new short[80];
    decoder(serial, decoded_value); //This is where I call my legacy
library
   
    return decoded_value;
}

I define these in my C# code as

[DllImport("decoder.dll")]
private static extern char init();

[DllImport("decoder.dll")]
private static extern char decode(????);

public Test()
{
   init();
   byte [] DataToDecode = {57,100,182,27,75,192,103,99,56};
   byte [] DecodedData;
  //Want to pass the byte array to the decode function and have it
pass back the decoded data
  //Pseudo code
   DecodedData = decode(DataToDecode); ///???? How do I do this
}

I can call init() successfully so I know the DLL is working OK. I just
need to know how to call the decode part of it. What I need to do is
pass in a 10 character byte array and have the decoded data which
would be an array of shorts of length 80. If anybody can show me how
to do this I would be very grateful.

Many thanks,