EditorGUILayout.BeginFoldoutHeaderGroup

参数

返回

布尔值用户选择的展开状态。如果为 true，则应渲染子对象。

说明

制作一个标签，其左侧带有展开箭头。

这对于类文件夹的结构非常有用，其中只有在展开父文件夹时才会显示子对象。此控件不能嵌套在另一个 BeginFoldoutHeaderGroup 中。要使用多个此类展开控件，您必须使用 EndFoldoutHeaderGroup 结束每个方法。


创建一个可折叠的标题菜单，可以隐藏或显示所选 Transform。

// Create a foldable header menu that hides or shows the selected Transform position.
// If you have not selected a Transform, the Foldout item stays folded until
// you select a Transform.

using UnityEditor;
using UnityEngine;

public class FoldoutHeaderUsage : EditorWindow
{
    bool showPosition = true;
    string status = "Select a GameObject";

    [MenuItem("Examples/Foldout Header Usage")]
    static void CreateWindow()
    {
        GetWindow<FoldoutHeaderUsage>();
    }

    public void OnGUI()
    {
        showPosition = EditorGUILayout.BeginFoldoutHeaderGroup(showPosition, status);

        if (showPosition)
            if (Selection.activeTransform)
            {
                Selection.activeTransform.position =
                    EditorGUILayout.Vector3Field("Position", Selection.activeTransform.position);
                status = Selection.activeTransform.name;
            }

        if (!Selection.activeTransform)
        {
            status = "Select a GameObject";
            showPosition = false;
        }
        // End the Foldout Header that we began above.
        EditorGUILayout.EndFoldoutHeaderGroup();
    }
}

创建一个菜单项操作，在单击时将所选对象移动到 0,0,0。

// Create a foldable header menu that hides or shows the selected Transform position.
// If you have not selected a Transform, the Foldout item stays folded until
// you select a Transform.

using UnityEditor;
using UnityEngine;

public class FoldoutHeaderUsage : EditorWindow
{
    bool showPosition = true;
    string status = "Select a GameObject";

    [MenuItem("Examples/Foldout Header Usage")]
    static void CreateWindow()
    {
        GetWindow<FoldoutHeaderUsage>();
    }

    public void OnGUI()
    {
        showPosition = EditorGUILayout.BeginFoldoutHeaderGroup(showPosition, status, null, ShowHeaderContextMenu);

        if (showPosition)
            if (Selection.activeTransform)
            {
                Selection.activeTransform.position =
                    EditorGUILayout.Vector3Field("Position", Selection.activeTransform.position);
                status = Selection.activeTransform.name;
            }

        if (!Selection.activeTransform)
        {
            status = "Select a GameObject";
            showPosition = false;
        }
        // End the Foldout Header that we began above.
        EditorGUILayout.EndFoldoutHeaderGroup();
    }

    void ShowHeaderContextMenu(Rect position)
    {
        var menu = new GenericMenu();
        menu.AddItem(new GUIContent("Move to (0,0,0)"), false, OnItemClicked);
        menu.DropDown(position);
    }

    void OnItemClicked()
    {
        Undo.RecordObject(Selection.activeTransform, "Moving to center of world");
        Selection.activeTransform.position = Vector3.zero;
    }
}