.Net/Winform

C# WndProc이용, USB인식 및 해제 감시

동구밖과수원 2011. 12. 7. 12:43

 

protected override void WndProc(ref Message m)

{

      UInt32 WM_DEVICECHANGE = 0x0219;

      UInt32 DBT_DEVTUP_VOLUME = 0x02;

      UInt32 DBT_DEVICEARRIVAL = 0x8000;

      UInt32 DBT_DEVICEREMOVECOMPLETE = 0x8004;

if ((m.Msg == WM_DEVICECHANGE) && (m.WParam.ToInt32() == DBT_DEVICEARRIVAL)) //디바이스 연결

{

      int devType = Marshal.ReadInt32(m.LParam, 4);

      if (devType == DBT_DEVTUP_VOLUME)

      {

            RefreshDevice();

      }

}

if ((m.Msg == WM_DEVICECHANGE) && (m.WParam.ToInt32() == DBT_DEVICEREMOVECOMPLETE)) //디바이스 연결 해제

{

      int devType = Marshal.ReadInt32(m.LParam, 4);

      if (devType == DBT_DEVTUP_VOLUME)

      {

            RefreshDevice();

      }

}

 

base.WndProc(ref m);

}

 

 

 

public void RefreshDevice()

{

            listBox1.Items.Clear();

            string[] ls_drivers = System.IO.Directory.GetLogicalDrives(); //연결 되어있는 디바이스 얻어오기

            foreach (string device in ls_drivers)

            {

            System.IO.DriveInfo dr = new System.IO.DriveInfo(device);

            if (dr.DriveType == System.IO.DriveType.Removable) //제거 가능한 타입이라면

            {

                  listBox1.Items.Add(device);

            }

      }

}

 

TestUSB.zip