ScpServer.ScpForm.WndProc C# (CSharp) Method

        protected override void WndProc(ref Message m)
        {
            try
            {
                if (m.Msg == ScpDevice.WM_DEVICECHANGE)
                {
                    var type = m.WParam.ToInt32();

                    switch (type)
                    {
                        case ScpDevice.DBT_DEVICEARRIVAL:
                        case ScpDevice.DBT_DEVICEQUERYREMOVE:
                        case ScpDevice.DBT_DEVICEREMOVECOMPLETE:

                            ScpDevice.DEV_BROADCAST_HDR hdr;

                            hdr =
                                (ScpDevice.DEV_BROADCAST_HDR)
                                    Marshal.PtrToStructure(m.LParam, typeof (ScpDevice.DEV_BROADCAST_HDR));

                            if (hdr.dbch_devicetype == ScpDevice.DBT_DEVTYP_DEVICEINTERFACE)
                            {
                                ScpDevice.DEV_BROADCAST_DEVICEINTERFACE_M deviceInterface;

                                deviceInterface =
                                    (ScpDevice.DEV_BROADCAST_DEVICEINTERFACE_M)
                                        Marshal.PtrToStructure(m.LParam,
                                            typeof (ScpDevice.DEV_BROADCAST_DEVICEINTERFACE_M));

                                var Class = "{" + new Guid(deviceInterface.dbcc_classguid).ToString().ToUpper() + "}";

                                var path = new string(deviceInterface.dbcc_name);
                                path = path.Substring(0, path.IndexOf('\0')).ToUpper();

                                rootHub.Notify((ScpDevice.Notified) type, Class, path);
                            }
                            break;
                    }
                }
            }
            catch (Exception ex)
            {
                Log.ErrorFormat("Unexpected error while processing window messages: {0}", ex);
            }

            base.WndProc(ref m);
        }