Menu.onbeforeshow event

Applies to Windows only

Occurs immediately before a hidden Menu is displayed.

Learn about events with Quickstart: adding HTML controls and handling events.

Syntax


<div data-win-control="WinJS.UI.Menu" 
    data-win-options="{beforeshow : handler}">
</div>


function handler(eventInfo) { /* Your code */ }
 
// addEventListener syntax
menu.addEventListener("beforeshow", handler);
menu.removeEventListener("beforeshow", handler);
 
- or -

menu.onbeforeshow = handler;


Event information

SynchronousNo
BubblesYes
CancelableYes

Event handler parameters

eventInfo

Type: Event

An object that contains information about the event.

Remarks

Setting event handlers declaratively (in HTML)

To set the event handler declaratively, it must be accessible to the global scope, and you must also call WinJS.Utilities.markSupportedForProcessing or WinJS.UI.eventHandler on the handler. You can make the handler accessible to the global scope by using WinJS.Namespace.define. For more information, see How to set event handlers declaratively.

Requirements

Minimum supported client

Windows 8 [Windows Store apps only]

Minimum supported server

Windows Server 2012 [Windows Store apps only]

Minimum supported phone

None supported

Namespace

WinJS.UI

Library

Ui.js

See also

Menu
MenuCommand
WinJS.UI Namespace
MenuCommand
Flyout
Displaying popups
Laying out your UI
HTML flyout control sample
Designers
Command patterns
Flyout
Guidelines for flyouts
Context menu
Guidelines for context menus

 

 

Show:
© 2014 Microsoft. All rights reserved.