1 files changed, 45 insertions, 0 deletions
diff --git a/LibWinUsb/DeviceNotify/Internal/SafeNotifyHandle.cs b/LibWinUsb/DeviceNotify/Internal/SafeNotifyHandle.cs
new file mode 100644
index 00000000..5960eaad
--- /dev/null
+++ b/LibWinUsb/DeviceNotify/Internal/SafeNotifyHandle.cs
@@ -0,0 +1,45 @@
+// Copyright � 2006-2010 Travis Robinson. All rights reserved.
+// 
+// website: http://sourceforge.net/projects/libusbdotnet
+// e-mail:  libusbdotnet@gmail.com
+// 
+// This program is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2 of the License, or 
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful, but 
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+// for more details.
+// 
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA. or 
+// visit www.gnu.org.
+// 
+// 
+using System;
+using Microsoft.Win32.SafeHandles;
+
+namespace LibUsbDotNet.DeviceNotify.Internal
+{
+    internal class SafeNotifyHandle : SafeHandleZeroOrMinusOneIsInvalid
+    {
+        public SafeNotifyHandle()
+            : base(true) { }
+
+        public SafeNotifyHandle(IntPtr pHandle)
+            : base(true) { SetHandle(pHandle); }
+
+        protected override bool ReleaseHandle()
+        {
+            if (handle != IntPtr.Zero)
+            {
+                bool bSuccess = WindowsDeviceNotifier.UnregisterDeviceNotification(handle);
+                handle = IntPtr.Zero;
+            }
+            return true;
+        }
+    }
+}
+\ No newline at end of file