Visual Studio Code – Error LNK2019 when compiling TwinCAT ADS program

I get error messages from Visual Studio 2022 linker when compiling. After looking through similar issues on this forum and trying as many solutions as I can find, I still can’t resolve the problem.

I am building a test program to test TwinCAT 3 ADS communications from an external C++ program. The sample code I am testing is from here:

https://infosys.beckhoff.com/content/1033/tc3_adsdll2/124823307.html?id=7185691884721905562

This is the beginning of my code:

// Test program to read and write an ADS variable from/to TwinCAT

#include <iostream>
#include <windows.h>
#include <conio.h>


#include "C:TwinCATAdsApiTcAdsDllIncludeTcAdsDef.h"
#include "C:TwinCATAdsApiTcAdsDllIncludeTcAdsApi.h"


int main()
{ 
    long nErr, nADSPort; 
    AmsAddr Addr; 
    PAmsAddr pAddr = &Addr; 
    ULONG lHdlVar, nData; 
    UINT nIntToRead;
    char szVar []={"MAIN.nCounter"}; 

    // Open communication port on the ADS router
    nADSPort = AdsPortOpen();
    nErr = AdsGetLocalAddress(pAddr);
    if (nErr) std::cerr << "Error: AdsGetLocalAddress: " << nErr << 'n';
    
    // TwinCAT 3 PLC1 port = 851
    pAddr->port = 851;

The required library ‘TcAdsDll.lib’ is installed and referenced as instructed here:

https://infosys.beckhoff.com/content/1033/tc3_adsdll2/123108747.html?id=7769290066237179923

For every call to the TwinCAT library I get an error:

Build started...
1>------ Build started: Project: ADSTest, Configuration: Debug Win32 ------
1>ADStest.obj : error LNK2019: unresolved external symbol _AdsPortOpen@0 referenced in function _main
1>ADStest.obj : error LNK2019: unresolved external symbol _AdsPortClose@0 referenced in function _main
1>ADStest.obj : error LNK2019: unresolved external symbol _AdsGetLocalAddress@4 referenced in function _main
1>ADStest.obj : error LNK2019: unresolved external symbol _AdsSyncWriteReq@20 referenced in function _main
1>ADStest.obj : error LNK2019: unresolved external symbol _AdsSyncReadReq@20 referenced in function _main
1>ADStest.obj : error LNK2019: unresolved external symbol _AdsSyncReadWriteReq@28 referenced in function _main
1>C:Usersrainer.barsDatapuppuADStestDebugADSTest.exe : fatal error LNK1120: 6 unresolved externals
1>Done building project "ADSTest.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

I am out of ideas. I suspect the cause is something fairly simple, but my skills are not sufficient to solve this.

Any help is greatly appreciated.