MenuItem

描述

MenuItem 属性用于向主菜单和检视面板上下文菜单添加菜单项。

该 MenuItem 属性能够将任何静态函数转变为菜单命令。仅静态函数可使用 MenuItem 属性。

To create a hotkey you can use the following special characters: % (ctrl on Windows and Linux, cmd on macOS), ^ (ctrl on Windows, Linux, and macOS), # (shift), & (alt). If no special modifier key combinations are required the key can be given after an underscore. For example to create a menu with hotkey shift-alt-g use "MyMenu/Do Something #&g". To create a menu with hotkey g and no key modifiers pressed use "MyMenu/Do Something _g".

Some special keyboard keys are supported as hotkeys, for example "#LEFT" would map to shift-left. The keys supported like this are: LEFT, RIGHT, UP, DOWN, F1 .. F12, HOME, END, PGUP, PGDN, INS, DEL, TAB, SPACE.

热键文本前必须有一个空格字符（“MyMenu/Do_g”不能被解释为热键，而“MyMenu/Do _g”则可以被解释为热键）。

将菜单项添加到“GameObject/”菜单，以在创建自定义游戏对象时，确保 调用 GameObjectUtility.SetParentAndAlign，从而确保在发生上下文单击事件时， 对新的游戏对象进行正确地重定父级（请参阅以下示例）。您的函数也应该调用 Undo.RegisterCreatedObjectUndo，以使创建操作可撤销并将 Selection.activeObject 设置到新创建的对象上。另请注意，为了将“GameObject/”中的菜单项 传播到层级视图 Create 下拉菜单和层级视图上下文菜单，它必须与 其他游戏对象创建菜单项归为一组。这可以通过将其优先级 设为 10 来实现（请参阅以下示例）。请注意，对于“GameObject/Create Other” 中没有明确优先级设置且支持旧版项目的 MenuItem 来说，接收到的优先级为 10 而非默认的 1000， 我们建议使用比“Create Other”更具描述性的类别名称，并将优先级 显式设置为 10。

using UnityEditor;
using UnityEngine;
public class MenuTest : MonoBehaviour
{
    // Add a menu item named "Do Something" to MyMenu in the menu bar.
    [MenuItem("MyMenu/Do Something")]
    static void DoSomething()
    {
        Debug.Log("Doing Something...");
    }

    // Validated menu item.
    // Add a menu item named "Log Selected Transform Name" to MyMenu in the menu bar.
    // We use a second function to validate the menu item
    // so it will only be enabled if we have a transform selected.
    [MenuItem("MyMenu/Log Selected Transform Name")]
    static void LogSelectedTransformName()
    {
        Debug.Log("Selected Transform is on " + Selection.activeTransform.gameObject.name + ".");
    }

    // Validate the menu item defined by the function above.
    // The menu item will be disabled if this function returns false.
    [MenuItem("MyMenu/Log Selected Transform Name", true)]
    static bool ValidateLogSelectedTransformName()
    {
        // Return false if no transform is selected.
        return Selection.activeTransform != null;
    }

    // Add a menu item named "Do Something with a Shortcut Key" to MyMenu in the menu bar
    // and give it a shortcut (ctrl-g on Windows, cmd-g on macOS).
    [MenuItem("MyMenu/Do Something with a Shortcut Key %g")]
    static void DoSomethingWithAShortcutKey()
    {
        Debug.Log("Doing something with a Shortcut Key...");
    }

    // Add a menu item called "Double Mass" to a Rigidbody's context menu.
    [MenuItem("CONTEXT/Rigidbody/Double Mass")]
    static void DoubleMass(MenuCommand command)
    {
        Rigidbody body = (Rigidbody)command.context;
        body.mass = body.mass * 2;
        Debug.Log("Doubled Rigidbody's Mass to " + body.mass + " from Context Menu.");
    }

    // Add a menu item to create custom GameObjects.
    // Priority 1 ensures it is grouped with the other menu items of the same kind
    // and propagated to the hierarchy dropdown and hierarchy context menus.
    [MenuItem("GameObject/MyCategory/Custom Game Object", false, 10)]
    static void CreateCustomGameObject(MenuCommand menuCommand)
    {
        // Create a custom game object
        GameObject go = new GameObject("Custom Game Object");
        // Ensure it gets reparented if this was a context click (otherwise does nothing)
        GameObjectUtility.SetParentAndAlign(go, menuCommand.context as GameObject);
        // Register the creation in the undo system
        Undo.RegisterCreatedObjectUndo(go, "Create " + go.name);
        Selection.activeObject = go;
    }
}

变量

构造函数