diff --git a/keycode.go b/keycode.go
new file mode 100644
index 0000000..1db0925
--- /dev/null
+++ b/keycode.go
@@ -0,0 +1,112 @@
+// Copyright 2016 The go-vgo Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// https://github.com/go-vgo/robotgo/blob/master/LICENSE
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+package hook
+
+type uMap map[string]uint16
+
+// MouseMap robotgo hook mouse's code map
+var MouseMap = uMap{
+	"left":       1,
+	"right":      2,
+	"center":     3,
+	"wheelDown":  4,
+	"wheelUp":    5,
+	"wheelLeft":  6,
+	"wheelRight": 7,
+}
+
+// Keycode robotgo hook key's code map
+var Keycode = uMap{
+	"`": 41,
+	"1": 2,
+	"2": 3,
+	"3": 4,
+	"4": 5,
+	"5": 6,
+	"6": 7,
+	"7": 8,
+	"8": 9,
+	"9": 10,
+	"0": 11,
+	"-": 12,
+	"+": 13,
+	//
+	"q":  16,
+	"w":  17,
+	"e":  18,
+	"r":  19,
+	"t":  20,
+	"y":  21,
+	"u":  22,
+	"i":  23,
+	"o":  24,
+	"p":  25,
+	"[":  26,
+	"]":  27,
+	"\\": 43,
+	//
+	"a": 30,
+	"s": 31,
+	"d": 32,
+	"f": 33,
+	"g": 34,
+	"h": 35,
+	"j": 36,
+	"k": 37,
+	"l": 38,
+	";": 39,
+	"'": 40,
+	//
+	"z": 44,
+	"x": 45,
+	"c": 46,
+	"v": 47,
+	"b": 48,
+	"n": 49,
+	"m": 50,
+	",": 51,
+	".": 52,
+	"/": 53,
+	//
+	"f1":  59,
+	"f2":  60,
+	"f3":  61,
+	"f4":  62,
+	"f5":  63,
+	"f6":  64,
+	"f7":  65,
+	"f8":  66,
+	"f9":  67,
+	"f10": 68,
+	"f11": 69,
+	"f12": 70,
+	// more
+	"esc":     1,
+	"delete":  14,
+	"tab":     15,
+	"ctrl":    29,
+	"control": 29,
+	"alt":     56,
+	"space":   57,
+	"shift":   42,
+	"rshift":  54,
+	"enter":   28,
+	//
+	"cmd":     3675,
+	"command": 3675,
+	"rcmd":    3676,
+	"ralt":    3640,
+	//
+	"up":    57416,
+	"down":  57424,
+	"left":  57419,
+	"right": 57421,
+}