sharedmemory.cs

This example can be found in Development\examples\csharp\sharedmemory\sharedmemory.cs.

This example shows how to activate the shared memory communication pipeline that enables communication of the PST Client application through the PST SDK. Note that for the shared memory pipeline to function, the application has to run with elevated access (administrator rights). After enabling shared memory, the PST Client application can be used to download calibration information and manage tracking targets.

When compiling and running this example, please make sure that the required dependencies can be found by the executable (e.g. by copying the Development\Redist directory into the build directory).

// Copyright PS-Tech B.V. All Rights Reserved.
 
using System;
using System.Runtime.InteropServices;
using System.Threading;
using PSTech.Pstsdk;
 
namespace PSTech.SharedMemory
{
    public class SharedMemory
    {
        //Registering control handler function.
        [DllImport("Kernel32")]
        private static extern bool SetConsoleCtrlHandler(ConsoleEventHandler handler, bool add);
 
        private delegate bool ConsoleEventHandler(CtrlType sig);
        static ConsoleEventHandler ConsoleCtrlEventHandler;
 
        public enum CtrlType
        {
            CtrlCEvent = 0,
            CtrlBreakEvent = 1,
            CtrlCloseEvent = 2,
            CtrlLogOffEvent = 5,
            CtrlShutdownEvent = 6,
        }
 
        private static bool ConsoleHandler(CtrlType sig)
        {
            Exithandler((int)sig);
            return true;
        }
 
        static void Exithandler(int sig)
        {
            Tracker.DisableSharedMemory();
            Tracker.Shutdown();
            Environment.Exit(0);
        }
 
        static int Main(string[] args)
        {
            // Register the exit handler with the application
            ConsoleCtrlEventHandler += new ConsoleEventHandler(ConsoleHandler);
            SetConsoleCtrlHandler(ConsoleCtrlEventHandler, true);
 
            // Implement error handling of PSTech.TrackerException exceptions to prevent
            // improper PST Tracker shutdown on errors.
            try
            {
                // Create an instance of the Tracker object using the default configuration path and file names.
                Tracker tracker = new Tracker();
 
                // Start the tracker server.
                tracker.StartTracker();
 
                // Enable the shared memory pipeline to enable client connections.
                Tracker.EnableSharedMemory();
 
                Console.Write("Shared memory server initialized. Start the PST Client application to create a connection.\n");
 
                // Wait for one minute before terminating this application.
                Thread.Sleep(60000);
 
                // Disable the shared memory pipeline. If the PST Client is still connected at this point,
                // it will try to reconnect and otherwise exit.
                Tracker.DisableSharedMemory();
            }
            catch (Exception e)
            {
                Console.Write(e + "\n");
                // Handle the error.
            }
            finally
            {
                // Make sure that the connection to the PST Tracker is shut down properly.
                Tracker.Shutdown();
            }
 
            return 0;
        }
    }
}