# GenericMenu

> GenericMenu lets you create custom context menus and dropdown menus.

## Definition

* **Type:** Class
* **Namespace:** [UnityEditor](/engine/6000.7/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public sealed class GenericMenu
```

## Remarks

The example below opens an Editor window with a button. Clicking the button displays a context menu, which lets you change the color to apply to the GUI in the window. Copy the example's contents into a script called GenericMenuExample.cs and put it into a folder in your project called Editor.

![GenericMenu (GenericMenu)](/api/media?file=/engine/6000.7/media/images/GenericMenu.png).

## Examples

```csharp
using UnityEngine;
using UnityEditor;

public class GenericMenuExample : EditorWindow
{
    // open the window from the menu item Example -> GUI Color
    [MenuItem("Example/GUI Color")]
    static void Init()
    {
        EditorWindow window = GetWindow<GenericMenuExample>();
        window.position = new Rect(50f, 50f, 200f, 24f);
        window.Show();
    }

    // serialize field on window so its value will be saved when Unity recompiles
    [SerializeField]
    Color m_Color = Color.white;

    void OnEnable()
    {
        titleContent = new GUIContent("GUI Color");
    }

    // a method to simplify adding menu items
    void AddMenuItemForColor(GenericMenu menu, string menuPath, Color color)
    {
        // the menu item is marked as selected if it matches the current value of m_Color
        menu.AddItem(new GUIContent(menuPath), m_Color.Equals(color), OnColorSelected, color);
    }

    // the GenericMenu.MenuFunction2 event handler for when a menu item is selected
    void OnColorSelected(object color)
    {
        m_Color = (Color)color;
    }

    void OnGUI()
    {
        // set the GUI to use the color stored in m_Color
        GUI.color = m_Color;

        // display the GenericMenu when pressing a button
        if (GUILayout.Button("Select GUI Color"))
        {
            // create the menu and add items to it
            GenericMenu menu = new GenericMenu();

            // forward slashes nest menu items under submenus
            AddMenuItemForColor(menu, "RGB/Red", Color.red);
            AddMenuItemForColor(menu, "RGB/Green", Color.green);
            AddMenuItemForColor(menu, "RGB/Blue", Color.blue);

            // an empty string will create a separator at the top level
            menu.AddSeparator("");

            AddMenuItemForColor(menu, "CMYK/Cyan", Color.cyan);
            AddMenuItemForColor(menu, "CMYK/Yellow", Color.yellow);
            AddMenuItemForColor(menu, "CMYK/Magenta", Color.magenta);
            // a trailing slash will nest a separator in a submenu
            menu.AddSeparator("CMYK/");
            AddMenuItemForColor(menu, "CMYK/Black", Color.black);

            menu.AddSeparator("");

            AddMenuItemForColor(menu, "White", Color.white);

            // display the menu
            menu.ShowAsContext();
        }
    }
}
```

## Properties

| Property                                                                                              | Description                                               |
| ----------------------------------------------------------------------------------------------------- | --------------------------------------------------------- |
| [allowDuplicateNames](/engine/6000.7/script-reference/unityeditor/genericmenu/allowduplicatenames.md) | Allow the menu to have multiple items with the same name. |

## Methods

| Method                                                                                        | Description                                       |
| --------------------------------------------------------------------------------------------- | ------------------------------------------------- |
| [AddDisabledItem](/engine/6000.7/script-reference/unityeditor/genericmenu/adddisableditem.md) | Add a disabled item to the menu.                  |
| [AddItem](/engine/6000.7/script-reference/unityeditor/genericmenu/additem.md)                 | Add an item to the menu.                          |
| [AddSeparator](/engine/6000.7/script-reference/unityeditor/genericmenu/addseparator.md)       | Add a seperator item to the menu.                 |
| [DropDown](/engine/6000.7/script-reference/unityeditor/genericmenu/dropdown.md)               | Show the menu at the given screen rect.           |
| [GetItemCount](/engine/6000.7/script-reference/unityeditor/genericmenu/getitemcount.md)       | Get number of items in the menu.                  |
| [ShowAsContext](/engine/6000.7/script-reference/unityeditor/genericmenu/showascontext.md)     | Show the menu under the mouse when right-clicked. |

## Delegates

| Delegate                                                                                              | Description                                                            |
| ----------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------- |
| [GenericMenu.MenuFunction](/engine/6000.7/script-reference/unityeditor/genericmenu/menufunction.md)   | Callback function, called when a menu item is selected.                |
| [GenericMenu.MenuFunction2](/engine/6000.7/script-reference/unityeditor/genericmenu/menufunction2.md) | Callback function with user data, called when a menu item is selected. |