Can you please see this page? It might be helpful for you.
Thanks for your reply. But the sample code of https://doc.developer.milestonesys.com/html/index.html?base=gettingstarted/intro_soap_protocols.html&tree=tree_3.html is C#. Could you provide sample code in C++?
The protocol samples are all C# but being protocols it is Milestone’s hope that you can transfer the code to your favorite language and environment.