1 files changed, 26 insertions, 0 deletions
diff --git a/widget/windows/InputDeviceUtils.h b/widget/windows/InputDeviceUtils.h
new file mode 100644
index 0000000000..d16698a03a
--- /dev/null
+++ b/widget/windows/InputDeviceUtils.h
@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sts=2 sw=2 et cin: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_widget_InputDeviceUtils_h__
+#define mozilla_widget_InputDeviceUtils_h__
+
+#include <windows.h>
+
+namespace mozilla {
+namespace widget {
+
+class InputDeviceUtils {
+ public:
+  static HDEVNOTIFY RegisterNotification(HWND aHwnd);
+  static void UnregisterNotification(HDEVNOTIFY aHandle);
+
+  // Returns the number of mouse type devices connected to this system.
+  static DWORD CountMouseDevices();
+};
+
+}  // namespace widget
+}  // namespace mozilla
+#endif  // mozilla_widget_InputDeviceUtils_h__