# MenuBarMenuChangeIsOpenEvent

interface

A `change:isOpen` event originating from a [menu view instance](module_ui_menubar_menubarview-MenuBarView.md#member-menus) of the [menu bar](module_ui_menubar_menubarview-MenuBarView.md).

[See source](https://github.com/ckeditor/ckeditor5/blob/master/packages/ckeditor5-ui/src/menubar/menubarview.ts#L467)

<a id="properties">

## Properties

<a id="member-args">

### `args: [ name: string, value: boolean, oldValue: boolean ]`

[See source](https://github.com/ckeditor/ckeditor5/blob/master/packages/ckeditor5-ui/src/menubar/menubarview.ts#L469)

<a id="member-name">

### `name: 'menu:change:isOpen'`

[See source](https://github.com/ckeditor/ckeditor5/blob/master/packages/ckeditor5-ui/src/menubar/menubarview.ts#L468)

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Full index of the CKEditor 5 API reference: [llms.txt](llms.txt)