I have been trying to program my TXT controller from DevC++ using the files availiable in the web page "TXT-C-Programming-Expert-Kit", but any example throws the next error.

C:\Users\usted\AppData\Local\Temp\cc5FVPet.o Main.cpp:(.text+0x96): undefined reference to ftIF2013TransferAreaComHandler::ftIF2013TransferAreaComHandler(shm_if_s*, int, char const*, char const*)'
even if I use only a small part of code

#include <iostream>
#include "../Common/ftProInterface2013TransferAreaCom.h"
using namespace std;
FISH_X1_TRANSFER *TransArea;
ftIF2013TransferAreaComHandler *ComHandler;
int main()
{
TransArea = new FISH_X1_TRANSFER[IF08_MAX];
ComHandler = new ftIF2013TransferAreaComHandler( TransArea, IF08_MAX, "192.168.7.2" );
return 0;
}
We appreciate all help than you can give us
greetings from Colombia
