Что за: unresolved external symbol_

#include "stdafx.h"
#include <windows.h>
#include <winnetwk.h>

int _tmain(int argc, _TCHAR* argv[])
{
    LPNETRESOURCE lpNet1;
    LPNETRESOURCE lpNet2;
    HANDLE hEnum;
    DWORD buff = 16384;
    DWORD cnt = -1;

    if(WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_UNKNOWN, RESOURCEUSAGE_CONNECTABLE, lpNet1, &hEnum) == NO_ERROR)
    {
        lpNet2 = (LPNETRESOURCE) GlobalAlloc(GPTR, buff);

        if(WNetEnumResource(hEnum, &cnt, lpNet2, &buff) == NO_ERROR)
        {

            for(DWORD i = 0; i < cnt; i++)
            {
                printf("RemoteName: %s", lpNet2->lpRemoteName);
            }

        }

        WNetCloseEnum(hEnum);
    }

    return 0;
}