unity3d GUI字体设置

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;

 public class click001 : MonoBehaviour {
     public bool WindowShow = false;
     private Rect rect = new Rect(, , , );

     public Renderer rend;

     public int fontSize;
     public FontStyle fontStyle;
     public RectOffset margin;
     public RectOffset padding;
     public Font font;

     void Start()
     {
         //获取renderer组件
         rend = GetComponent<Renderer>();
     }

     void OnGUI()
     {

         //窗口id  窗口大小  窗口回调（定义窗口内视图） 窗口标题
         if (WindowShow)
         {
             GUI.skin.window.font = font;
             GUI.skin.window.fontStyle = fontStyle;
             GUI.skin.window.fontSize = fontSize;
             GUI.skin.window.margin = margin;
             GUI.skin.window.padding = padding;

             if (gameObject.tag == "pipe")
             {
                 GUI.Window(, rect, onWindowOne, "管道");
             }
             else if(gameObject.tag == "stand")
             {
                 GUI.Window(, rect, onWindowOne, "支架");
             }
             else if(gameObject.tag == "base")
             {
                 GUI.Window(, rect, onWindowOne, "底座");
             }
             else if(gameObject.tag == "valve")
             {
                 GUI.Window(, rect, onWindowOne, "阀门");
             }
         }

     }

     void onWindowOne(int winId)
     {

         GUI.skin.label.font = font;
         GUI.skin.label.fontStyle = fontStyle;
         GUI.skin.label.fontSize = fontSize;
         GUI.skin.label.margin = margin;
         GUI.skin.label.padding = padding;

         if (gameObject.tag == "pipe")
         {
             GUI.Label(new Rect(, , , ), "当前窗口是管道");
         }
         else if (gameObject.tag == "stand")
         {
             GUI.Label(new Rect(, , , ), "当前窗口是支架");
         }
         else if (gameObject.tag == "base")
         {
             GUI.Label(new Rect(, , , ), "当前窗口是底座");
         }
         else if (gameObject.tag == "valve")
         {
             GUI.Label(new Rect(, , , ), "当前窗口是阀门");
         }

         GUI.skin.button.font = font;
         //GUI.Label(new Rect(10, 10, 140, 40), "当前窗口id是" + winId);
         if (GUI.Button(new Rect(, , , ), "按钮1"))
         {
             Debug.Log("当前窗口id" + winId);
         }
         //定义窗体可以活动的范围 这个功能不知道为什么没有实现
         //GUI.DragWindow(new Rect(0, 0, 10000, 10000));
     }

     void OnMouseDown()
     {
         if (WindowShow)
         {
             WindowShow = false;
         }
         else
         {
             WindowShow = true;
         }

     }
 }