# OnClientApplicationMenuItemClicking

The **OnClientApplicationMenuItemClicking** client-side event occurs when an ApplicationMenu items is clicked, before the ribbonbar responds to the mouse click.

The event handler receives two parameters:

1. The instance of the ribbonbar firing the event.

2. An eventArgs parameter containing the following methods:

   * **get_applicationMenu()** returns a reference to the ribbonbar application menu.

   * **get_item()** returns a reference to the clicked application menu item.

   * **get_domEvent()** returns the DOM event object.

   * **set_cancel()** lets you cancel the event and prevent changing the selected tab.

## See Also

* [Client-side Programming Overview](https://www.telerik.com/products/aspnet-ajax/documentation/controls/ribbonbar/client-side-programming/overview)

* [Application Menu](https://www.telerik.com/products/aspnet-ajax/documentation/controls/ribbonbar/radribbonbar-items/application-menu)

* [Client-side Events Overview](https://www.telerik.com/products/aspnet-ajax/documentation/controls/ribbonbar/client-side-programming/events/overview)