GUISkin.horizontalSlider

설명

Style used by default for the background part of GUI.HorizontalSlider controls.

The padding property is used to determine the size of the area the thumb can be dragged within.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public float hSliderValue = 0.0F;
    public GUIStyle style;
    void OnGUI() {
        GUI.skin.horizontalSlider = style;
        hSliderValue = GUILayout.HorizontalSlider(hSliderValue, 0.0F, 10.0F);
    }
}