ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Working with menus
This example assigns Ctrl+Shift+G as the key equivalent by setting the modifier array directly:
var item:NativeMenuItem = new NativeMenuItem("Ungroup");
item.keyEquivalent = "G";
item.keyEquivalentModifiers = [Keyboard.CONTROL];
Note: Key equivalents are only triggered for application and window menus. If you add a key equivalent to a context or
pop-up menu, the key equivalent is displayed in the menu label, but the associated menu command is never invoked.
Mnemonics (AIR)
Adobe AIR 1.0 and later
Mnemonics are part of the operating system keyboard interface to menus. Linux, Mac OS X, and Windows allow users
to open menus and select commands with the keyboard, but there are subtle differences.
On Mac OS X, the user types the first letter or two of the menu or command and then presses the return key. The
mnemonicIndex property is ignored.
On Windows, only a single letter is significant. By default, the significant letter is the first character in the label, but if
you assign a mnemonic to the menu item, then the significant character becomes the designated letter. If two items in
a menu have the same significant character (whether or not a mnemonic has been assigned), then the user’s keyboard
interaction with the menu changes slightly. Instead of pressing a single letter to select the menu or command, the user
must press the letter as many times as necessary to highlight the desired item and then press the enter key to complete
the selection. To maintain a consistent behavior, you should assign a unique mnemonic to each item in a menu for
window menus.
On Linux, no default mnemonic is provided. You must specify a value for the mnemonicIndex property of a menu item
to provide a mnemonic.
Specify the mnemonic character as an index into the label string. The index of the first character in a label is 0. Thus,
to use “r” as the mnemonic for a menu item labeled, “Format,” you would set the mnemonicIndex property equal to 2.
var item:NativeMenuItem = new NativeMenuItem("Format");
item.mnemonicIndex = 2;
Menu item state
Adobe AIR 1.0 and later
Menu items have the two state properties, checked and enabled:
checked Set to true to display a check mark next to the item label.
var item:NativeMenuItem = new NativeMenuItem("Format");
item.checked = true;
enabled Toggle the value between true and false to control whether the command is enabled. Disabled items are
visually “grayed-out” and do not dispatch select events.
var item:NativeMenuItem = new NativeMenuItem("Format");
item.enabled = false;
Last updated 6/6/2012
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