diff -r 72885c950813 -r cdc5f8f1b79e Win32/Win32AppCommand.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Win32/Win32AppCommand.cs	Sun Mar 15 20:25:58 2015 +0100
@@ -0,0 +1,37 @@
+//
+// Copyright (C) 2014-2015 Stéphane Lenclud.
+//
+// This file is part of SharpLibHid.
+//
+// SharpDisplayManager 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 3 of the License, or
+// (at your option) any later version.
+//
+// SharpDisplayManager 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 SharpDisplayManager.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace SharpLib.Win32
+{
+    static public partial class Const
+    {
+        public const int WM_APPCOMMAND = 0x0319;
+    }
+
+    static public partial class Macro
+    {
+        public static int GET_APPCOMMAND_LPARAM(IntPtr lParam)
+        {
+            return ((short)HIWORD(lParam.ToInt32()) & ~Const.FAPPCOMMAND_MASK);
+        }
+    }
+}
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