using System;
using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;namespace ICS{ public partial class FrmMain : Form {#region WndProc常量 public const int WM_DEVICECHANGE = 0x219; public const int DBT_DEVICEARRIVAL = 0x8000; public const int DBT_CONFIGCHANGECANCELED = 0x0019; public const int DBT_CONFIGCHANGED = 0x0018; public const int DBT_CUSTOMEVENT = 0x8006; public const int DBT_DEVICEQUERYREMOVE = 0x8001; public const int DBT_DEVICEQUERYREMOVEFAILED = 0x8002; public const int DBT_DEVICEREMOVECOMPLETE = 0x8004; public const int DBT_DEVICEREMOVEPENDING = 0x8003; public const int DBT_DEVICETYPESPECIFIC = 0x8005; public const int DBT_DEVNODES_CHANGED = 0x0007; public const int DBT_QUERYCHANGECONFIG = 0x0017; public const int DBT_USERDEFINED = 0xFFFF; public const int DBT_DEVTYP_OEM = 0x00000000;//OEM- or IHV-defined device type public const int DBT_DEVTYP_PORT = 0x00000003;//Port device (serial or parallel). public const int DBT_DEVTYP_VOLUME = 0x00000002;//Logical volume. #endregion [StructLayout(LayoutKind.Sequential)] public struct DEV_BROADCASR_HDR { public int Size; public int DeviceType; public int Reserved; } public FrmMain() { InitializeComponent(); } protected override void WndProc(ref Message m
