Monitoring desktop windows from a Windows service

using System.Collections.Generic;
using System.ServiceProcess;
using System.Text;

namespace ScreenmonitorService
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        static void Main()
        {


            // More than one user Service may run within the same process. To add
            // another service to this process, change the following line to
            // create a second service object. For example,
            //
            //   ServicesToRun = new ServiceBase[] {new Service1(), new MySecondUserService()};
            //
            ScreenMonitor sm = new ScreenMonitor();

//#if(DEBUG)

//            // Debug code: this allows the process to run as a non-service.
//            // It will kick off the service start point, but never kill it.
//            // Shut down the debugger to exit
//            sm.StartDebugService();
//            // Put a breakpoint on the following line to always catch
//            // your service when it has finished its work

//            System.Threading.Thread.Sleep(System.Threading.Timeout.Infinite);
//#else
            ServiceBase[] ServicesToRun;
            ServicesToRun = new ServiceBase[] { sm};
            ServiceBase.Run(ServicesToRun);
//#endif
        }
    }
}