diff -r 63a5f4c05179 -r b044174a8d7b Win32AppCommand.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Win32AppCommand.cs	Sat Dec 27 21:35:33 2014 +0100
@@ -0,0 +1,18 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace 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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