arduino leonardo as keyboard input

 I need a fast key for space bar and arrows to control netflix. 

arduino has a keyboard.h lib for HID capable, seach on web, it seems keyboard sends out value for each key. presented as key codes

I need:

VK_SPACE

0x20

空格鍵

VK_LEFT

0x25

向左鍵

VK_RIGHT

0x27

向右鍵

I tried example from keyboard.write() it write "A" when D2 pressed.

it works, but print out several "A"s, when pressed once, I think I need to use edge detection. 

鍵 盤 鍵 碼 值 對 照 表

數字鍵	鍵碼值	數字鍵	鍵碼值	數字鍵	鍵碼值
1	49	F1	112	Numbpad 0	96
2	50	F2	113	Numbpad1	97
3	51	F3	114	Numbpad2	98
4	52	F4	115	Numbpad3	99
5	53	F5	116	Numbpad4	100
6	54	F6	117	Numbpad5	101
7	55	F7	118	Numbpad6	102
8	56	F8	119	Numbpad7	103
9	57	F9	120	Numbpad8	104
		F10	121	Numbpad9	105
		F11	122	Multiply (*)	106
		F12	123	Add (+)	107
				Enter	108
				Subtract (-)	109
				Decimal (.)	110
				Divide (/)	111

字母	鍵碼值	字母	鍵碼值	其它鍵	鍵碼值	其它鍵	鍵碼值
A	65	N	78	Backspace	8	Left Arrow	37
B	66	O	79	Tab	9	Up Arrow	38
C	67	P	80	Clear	12	Right Arrow	39
D	68	Q	81	Enter	13	Down Arrow	40
E	69	R	82	Shift	16	Insert	45
F	70	S	83	Control	17	Delete	46
G	71	T	84	Alt	18	Help	47
H	72	U	85	Caps Lock	20	Num Lock	144
I	73	V	86	Esc	27	; :	186
J	74	W	87	Spacebar	32	= +	187
K	75	X	88	Page Up	33	- _	189
L	76	Y	89	Page Down	34	/ ?	191
M	77	Z	90	End	35	\Q ~	192
				Home	36	[ {	219
						\ |	220
						] }	221
						'' '	222

I get my arduino leobardo work with space bar(0x20) and K(0X4B) to stop youtube.

but left arrow(0x25) does not work, in return , J(0X4A) as back 10sec and L(0X4C)

works.