C / C++ / MFC

Hi All,

I'm trying to create a C++ DLL using the WinInet API, but for some odd reason, I get no errors during compiling but get external link errors regarding variables within my class. Any idea how I can resolve this? Visual Studio 2015.



----------------------------------------header test.h -------------------------------------------
// #include "stdafx.h"
using namespace std;
// #include <Winineti.h>
#include <windows.h>
#include <strsafe.h>
#include <wininet.h>
#include <math.h>
#include <cstring>
#include <WinInet.h>
//#include <string>
#pragma comment(lib, "wininet.lib")
#pragma comment(lib, "user32.lib")
#define  FTP_FUNCTIONS_BUFFER_SIZE          MAX_PATH+8


namespace Win32_FTP
{
        class FTP_Win32_ClientV1
        {
        private:


        public:
                        static LPCWSTR sFileSearch;
                        static char * sIpAddress;
                        static  LPCWSTR sUsername;
                        static LPCWSTR sPassword;
                        static string sRemoteDir;
                        static string sLocalDir;
                        static string sFilename;
                        static DWORD dwError;
                        static HINTERNET hFTPConnect;
                        static HINTERNET hFind;
                        static HINTERNET hConnect;

                        static HANDLE hFile;
                        static WIN32_FIND_DATA   FindFileData;
                        static string strTemp;


                static  __declspec(dllexport) void Test1();
                static  __declspec(dllexport) void FtpCloseConnection();

        };
}


----------------------------------------source test.cpp -------------------------------------------

//using namespace std;
#include <iostream>
#include "test.h"
// using namespace std;


namespace Win32_FTP
{


        void FTP_Win32_Client::Test1()
        {
                cout << "This is a test from Cplus to Csharp DLL";
        }


        void FTP_Win32_Client::FtpCloseConnection()
        {

                InternetCloseHandle(FTP_Win32_Client::hFind);
                InternetCloseHandle(FTP_Win32_Client::hFTPConnect);
                InternetCloseHandle(FTP_Win32_Client::hConnect);
        }

}



***************************LINK ERRORS ************************
Test.obj : error LNK2001: unresolved external symbol "public: static void * Win32_FTP::FTP_Win32_Client::hFTPConnect" (?hFTPConnect@FTP_Win32_Client@Win32_FTP@@2PAXA)

Test.obj : error LNK2001: unresolved external symbol "public: static void * Win32_FTP::FTP_Win32_Client::hFind" (?hFind@FTP_Win32_Client@Win32_FTP@@2PAXA)

Test.obj : error LNK2001: unresolved external symbol "public: static void * Win32_FTP::FTP_Win32_Client::hConnect" (?hConnect@FTP_Win32_Client@Win32_FTP@@2PAXA)