控件代码分分布到场景代码中，优化控件相关代码

parts/scenes/setting_key.lua

@@ -130,4 +130,13 @@ function Pnt.setting_key()
 	end
 	setFont(35)
 	gc.print(text.page..S.board,280,570)
-end
+end
+
+WIDGET.init("setting_key",{
+	WIDGET.newText({name="keyboard",	x=340,y=30,font=25,color="lRed"}),
+	WIDGET.newText({name="keyboard",	x=940,y=30,font=25,color="lRed"}),
+	WIDGET.newText({name="joystick",	x=540,y=30,font=25,color="lBlue"}),
+	WIDGET.newText({name="joystick",	x=1140,y=30,font=25,color="lBlue"}),
+	WIDGET.newText({name="help",		x=50,y=650,font=30,align="L"}),
+	WIDGET.newButton({name="back",		x=1140,y=640,w=170,h=80,font=40,code=WIDGET.lnk.BACK}),
+})