GUISkin.horizontalScrollbar 水平滚动条

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	public float hSbarValue;
	public GUIStyle style;
	void OnGUI() {
		GUI.skin.horizontalScrollbar = style;
		hSbarValue = GUILayout.HorizontalScrollbar(hSbarValue, 1.0F, 0.0F, 10.0F);
	}
}

// Modifies only the default background of the
// horizontal scrollbar of the current GUISkin
//修改当前GUISkin的水平滚动条默认背景样式

var hSbarValue : float;
var style : GUIStyle;

function OnGUI () {
	GUI.skin.horizontalScrollbar = style;
	hSbarValue = GUILayout.HorizontalScrollbar (hSbarValue, 1.0, 0.0, 10.0);
}