C# 如何在Unity GUI中构建三个水平触摸的按钮

我正在尝试在Unity中构建一个自定义编辑器窗口，我想让按钮像标签一样发挥图片中的效果

我试图水平放置按钮，按钮之间有负数空格，但效果不太理想。下面是我的代码

        GUILayout.BeginHorizontal();
        GUILayout.FlexibleSpace();

        if (GUILayout.Button("Heightmap")) { }
        GUILayout.Space(-10);
        if (GUILayout.Button("Vegetation")) { }
        GUILayout.Space(-10);
        if (GUILayout.Button("Details")){ }

        GUILayout.FlexibleSpace();
        GUILayout.EndHorizontal();

使用：

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尝试从这里开始：这是用于显示照明窗口的编辑器的源代码。如果你找到了，请把它贴出来，我已经挖了一段时间了，但是没有找到它^^^@Lotan请看下面我的答案Hanks@Ruzihm，还有两步要走^ ^

using UnityEngine;
using UnityEditor;

public class MyWindow : EditorWindow
{
    int toolbarInt = 0;
    string[] toolbarStrings = {"Heightmap", "Vegetation", "Details"};

    // Add menu named "My Window" to the Window menu
    [MenuItem("Window/My Window")]
    static void Init()
    {
        // Get existing open window or if none, make a new one:
        MyWindow window = (MyWindow)EditorWindow.GetWindow(typeof(MyWindow));
        window.Show();
    }

    void OnGUI()
    {
        toolbarInt = GUILayout.Toolbar(toolbarInt, toolbarStrings);

        switch (toolbarInt)
        {
            case 0:
            GUILayout.Button("Content for Heightmap");
            break;

            case 1:
            GUILayout.Button("Content for Vegetation");
            break;

            case 2:
            GUILayout.Button("Button for Details");
            break;
        }
    }
}