Version: 2022.3
语言: 中文

EditorGUILayout.Popup

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public static int Popup (int selectedIndex, string[] displayedOptions, params GUILayoutOption[] options);
public static int Popup (int selectedIndex, string[] displayedOptions, GUIStyle style, params GUILayoutOption[] options);
public static int Popup (int selectedIndex, GUIContent[] displayedOptions, params GUILayoutOption[] options);
public static int Popup (int selectedIndex, GUIContent[] displayedOptions, GUIStyle style, params GUILayoutOption[] options);
public static int Popup (string label, int selectedIndex, string[] displayedOptions, params GUILayoutOption[] options);
public static int Popup (string label, int selectedIndex, string[] displayedOptions, GUIStyle style, params GUILayoutOption[] options);
public static int Popup (GUIContent label, int selectedIndex, GUIContent[] displayedOptions, params GUILayoutOption[] options);
public static int Popup (GUIContent label, int selectedIndex, GUIContent[] displayedOptions, GUIStyle style, params GUILayoutOption[] options);

参数

label （可选）字段前的标签。
selectedIndex 字段显示的选项的索引。
displayedOptions 弹出菜单中所示选项的数组。
style 可选 GUIStyle。
options 一个可选的布局选项列表，用于指定额外的布局属性。此处传递的任何值都将覆盖 style 定义的设置。
另请参阅：GUILayout.Width、GUILayout.Height、GUILayout.MinWidth、GUILayout.MaxWidth、GUILayout.MinHeight、 GUILayout.MaxHeight、GUILayout.ExpandWidth、GUILayout.ExpandHeight。

返回

int 用户所选选项的索引。

描述

创建一个通用弹出选择字段。

以参数形式获取当前所选的索引，并返回用户选择的索引。


根据所选选项创建原始项。 

using UnityEditor;
using UnityEngine;
using System.Collections;

// Creates an instance of a primitive depending on the option selected by the user.
public class EditorGUILayoutPopup : EditorWindow
{
    public string[] options = new string[] {"Cube", "Sphere", "Plane"};
    public int index = 0;
    [MenuItem("Examples/Editor GUILayout Popup usage")]
    static void Init()
    {
        EditorWindow window = GetWindow(typeof(EditorGUILayoutPopup));
        window.Show();
    }

    void OnGUI()
    {
        index = EditorGUILayout.Popup(index, options);
        if (GUILayout.Button("Create"))
            InstantiatePrimitive();
    }

    void InstantiatePrimitive()
    {
        switch (index)
        {
            case 0:
                GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
                cube.transform.position = Vector3.zero;
                break;
            case 1:
                GameObject sphere = GameObject.CreatePrimitive(PrimitiveType.Sphere);
                sphere.transform.position = Vector3.zero;
                break;
            case 2:
                GameObject plane = GameObject.CreatePrimitive(PrimitiveType.Plane);
                plane.transform.position = Vector3.zero;
                break;
            default:
                Debug.LogError("Unrecognized Option");
                break;
        }
    }
}

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