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(30, 40, 150, 150);

    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(0, rect, onWindowOne, "管道");
            }
            else if(gameObject.tag == "stand")
            {
                GUI.Window(1, rect, onWindowOne, "支架");
            }
            else if(gameObject.tag == "base")
            {
                GUI.Window(2, rect, onWindowOne, "底座");
            }
            else if(gameObject.tag == "valve")
            {
                GUI.Window(3, 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(10, 10, 140, 40), "当前窗口是管道");
        }
        else if (gameObject.tag == "stand")
        {
            GUI.Label(new Rect(10, 10, 140, 40), "当前窗口是支架");
        }
        else if (gameObject.tag == "base")
        {
            GUI.Label(new Rect(10, 10, 140, 40), "当前窗口是底座");
        }
        else if (gameObject.tag == "valve")
        {
            GUI.Label(new Rect(10, 10, 140, 40), "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(10, 50, 80, 30), "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;
        }
        
    }
}