Fix for issue #9

madwizard-thomas · madwizard-thomas · commit f21c239991ac · 2014-06-21T19:28:17.000Z
diff --git a/WinUSBNet/DeviceNotifyHook.cs b/WinUSBNet/DeviceNotifyHook.cs
@@ -66,7 +66,7 @@ internal void OnHandleDestroyed(object sender, EventArgs e)
             {
                 // Window was destroyed, release hook.
                 ReleaseHandle();
-                if (_notifyHandle != null)
+                if (_notifyHandle != IntPtr.Zero)
                 {
                     API.DeviceManagement.StopDeviceDeviceNotifications(_notifyHandle);
                     _notifyHandle = IntPtr.Zero;
@@ -109,6 +109,7 @@ protected virtual void Dispose(bool disposing)
             if (_notifyHandle != IntPtr.Zero)
             {
                 API.DeviceManagement.StopDeviceDeviceNotifications(_notifyHandle);
+				_notifyHandle = IntPtr.Zero;
             }
         }
 

Original file line number	Diff line number	Diff line change
`@@ -66,7 +66,7 @@ internal void OnHandleDestroyed(object sender, EventArgs e)`
`66`	`66`	`{`
`67`	`67`	`// Window was destroyed, release hook.`
`68`	`68`	`ReleaseHandle();`
`69`		`- if (_notifyHandle != null)`
	`69`	`+ if (_notifyHandle != IntPtr.Zero)`
`70`	`70`	`{`
`71`	`71`	`API.DeviceManagement.StopDeviceDeviceNotifications(_notifyHandle);`
`72`	`72`	`_notifyHandle = IntPtr.Zero;`
`@@ -109,6 +109,7 @@ protected virtual void Dispose(bool disposing)`
`109`	`109`	`if (_notifyHandle != IntPtr.Zero)`
`110`	`110`	`{`
`111`	`111`	`API.DeviceManagement.StopDeviceDeviceNotifications(_notifyHandle);`
	`112`	`+ _notifyHandle = IntPtr.Zero;`
`112`	`113`	`}`
`113`	`114`	`}`
`114`	`115`