newbie question about Event Watchers

[sscout]

I'm trying to learn .net without learning C# first (not my choice) and I just ran across this code:

 watcher.EventArrived += new EventArrivedEventHandler(handler.Arrived);

The full source code is below. I don't really get this line, though, and MSDN says nothing about it, does the += mean it's added on a queue (the handler.Arrived event)? I don't need this explained in plain english but if someone could explain that line in C or C++ terms I'd be very grateful, thanks.

sscout

 using System;
using System.Management;
public class EventWatcher
{
    public static void Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        WqlEventQuery query = new WqlEventQuery("__InstanceCreationEvent"
            , new TimeSpan(0, 0, 1), "TargetInstance isa \"Win32_Process\"");
        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher = new ManagementEventWatcher(query);
        MyHandler handler = new MyHandler();
        watcher.EventArrived += new EventArrivedEventHandler(handler.Arrived);
        watcher.Start();
        Console.WriteLine("Press enter to exit...");
        Console.ReadLine();
    }
    public class MyHandler
    {
        public void Arrived(object sender, EventArrivedEventArgs e)
        {
            Console.WriteLine("Process {0} has created, path is: {1}"
        , ((ManagementBaseObject)(e.NewEvent["TargetInstance"]))["Name"]
            , ((ManagementBaseObject)(e.NewEvent["TargetInstance"]))["ExecutablePath"]);
        }
    }
}