Hi all,

I have a C# windows service that need to handle the
SERVICE_CONTROL_DEVICEEVENT event.
This event is not supported by the ServiceBase class so I tried to use the
P/Invoke to call RegisterServiceCtrlHandlerEx() and register the call back
method HandlerEx() but i was unable to receive valid handle.
my code is listed below any help on the subject would be appreciated

public class Service1 : System.ServiceProcess.ServiceBase
{
   private delegate int callbackEx(int control,int eventType,IntPtr
eventData,IntPtr context);
   [DllImport("kernel32.dll", SetLastError=true)]
   static extern unsafe int GetLastError();
   [DllImport("advapi32.dll", SetLastError=true)]
   static extern unsafe IntPtr RegisterServiceCtrlHandlerEx(string
lpServiceName,callbackEx cbex,IntPtr context);

   private System.ComponentModel.Container components = null;

   public static int callbackexfunc(int control,int eventType,IntPtr
eventData,IntPtr context)
   {
       return 0;
   }

   public Service1()
   {
       InitializeComponent();
       callbackEx myCallback = new callbackEx(Service1.callbackexfunc);
       IntPtr h =
RegisterServiceCtrlHandlerEx(this.ServiceName,myCallback,IntPtr.Zero );
       MessageBox.Show(GetLastError().ToString());

   }
.....
}

Thanks
   Miki