DropdownMenu.InsertSeparator

Parameters

Description

Adds a separator line in the menu.

The separator is added at the end of the specified index in the list.

using UnityEditor;
using UnityEngine;
using UnityEngine.UIElements;

public class ContextMenuWindow : EditorWindow
{
    [MenuItem("My/Context Menu Window")]
    static void ShowMe() => GetWindow<ContextMenuWindow>();

    void CreateGUI()
    {
        var contextMenuContainer = new VisualElement();
        contextMenuContainer.style.flexGrow = 1;
        contextMenuContainer.AddManipulator(new ContextualMenuManipulator(e =>
        {
            e.menu.AppendAction("My Action 1", a => Debug.Log("My Action 1 Works"), DropdownMenuAction.Status.Normal);  // 0
            e.menu.AppendAction("My Action 2", a => Debug.Log("My Action 2 Works"), DropdownMenuAction.Status.Normal);  // 1
            e.menu.AppendAction("Submenu/My Action 3", a => Debug.Log("My Action 3 Works"), DropdownMenuAction.Status.Normal);  // 2
            e.menu.AppendAction("Submenu/My Action 4", a => Debug.Log("My Action 4 Works"), DropdownMenuAction.Status.Normal);  // 3

            e.menu.InsertSeparator("/", 1);     // Indices from 1 to 3 are shifted up index by 1. In result 'My Action 2' now has an index of 2.
            e.menu.InsertSeparator("Submenu/", 4);  // If we want to insert a separator between submenu items, we have to use shifted indices
        }));

        rootVisualElement.Add(contextMenuContainer);
    }
}