MACROMEDIA FLASH 8-INTRODUCTION TO FLASH LITE 2.X... Reference manual

Introduction to Flash Lite 2.x ActionScript

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Acknowledgments
Project Management: Mary Leigh Burke
Writing: Tim Statler
Managing Editor: Rosana Francescato
Editing: Linda Adler, Geta Carson, Mary Ferguson, Mary Kraemer
Production Management: Adam Barnett, Kristin Conradi
Localization: Luciano Arruda and Masayo Noda
Media Design and Production: Yuriko Ando, Aaron Begley, Paul Benkman. John Francis, Geeta Karmarkar, Paul Rangel,
Arena Reed, Mario Reynoso
Special thanks to Lisa Friendly, Bonnie Loo, Erick Vera, the beta testers, and the entire Flash Lite engineering and QA teams.
First Edition: January 2006
Adobe Systems Incorporated
601 Townsend St.
San Francisco, CA 94103

3
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Guide to instructional media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Additional resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typographical conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 1: Unsupported and Partially Supported ActionScript
Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Commands issued through fsCommand and fsCommand2. . . . . . . . . . 7
Commands partially supported or unsupported by fsCommand . . . . . . 8
Partially supported global properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 2: Unsupported and Partially Supported Classes . . . . . .11
Button class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Date class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Key class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Mouse class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Event summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MovieClip class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SharedObject class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
System class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
capabilities (System.capabilities) class . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Sound class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Stage class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
TextField class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
TextFormat class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Video class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4

5
Introduction
Macromedia Flash Lite 1.0 and Flash Lite 1.1, the first versions of Flash Lite, are based on
Macromedia Flash Player 4. Flash Lite 2.0 is based on Flash Player 7, but differs from it in the
following respects:
■It does not support ActionScript 2.0 (as used with Flash Player 7 for Flash desktop
applications).
■It supports some features only partially.
■It adds some features specifically for mobile devices.
This document describes the differences between the ActionScript supported for Flash Lite
2.0 and the ActionScript that was supported for Flash Player 7. Wherever applicable, this
document includes cross-references to the following documents that provide additional details
about the various classes and how to use them when writing Flash Lite 2.0 applications:
■Flash Lite 2.x ActionScript Language Reference
■Developing Flash Lite 2.x Applications
■Learning ActionScript 2.0 in Flash
Guide to instructional media
The Flash Lite documentation package includes the following media to help you learn how to
create Flash Lite applications:
■Getting Started with Flash Lite 2.x provides an overview of Flash Lite technology and
developing Flash Lite 2.0 content for mobile devices. It also includes a step-by-step
tutorial for creating a Flash Lite 2.0 application.
■Developing Flash Lite 2.x Applications is a comprehensive guide to creating Flash Lite
content and includes instructions for testing your applications in the integrated Flash Lite
emulator.
■Flash Lite 2.x ActionScript Language Reference describes all the ActionScript language
features available to Flash Lite developers and provides example code.

6Introduction
■Learning ActionScript 2.0 in Flash describes how to write ActionScript for Flash Player 7.
Cross references in Introduction to Flash Lite 2.x ActionScript detail the sections of Learning
ActionScript 2.0 in Flash that apply to Flash Lite.
■The Flash Lite sample applications demonstrate key concepts and best practices discussed
or mentioned in the written documentation.
Additional resources
For the latest information on developing Flash Lite applications, plus advice from expert
users, advanced topics, examples, tips, and other updates, see the Mobile and Devices
Developer Center at www.macromedia.com/devnet/devices/.
For TechNotes, documentation updates, and links to additional resources in the Flash Lite
developer community, see the Macromedia Flash Lite Support Center at
www.macromedia.com/support/flashlite/.
Typographical conventions
The following typographical conventions are used in this manual:
■Italic font indicates a value that should be replaced (for example, in a folder path).
■Code font indicates ActionScript code.
■Code font italic indicates an ActionScript parameter.
■Bold font indicates a verbatim entry.
■Double quotation marks ("") in code examples indicate delimited strings. However,
programmers can also use single quotation marks (').

7
1
CHAPTER 1
Unsupported and Partially
Supported ActionScript Elements
This chapter describes the global functions and properties, constants, operators, statements,
extensions, and keywords that are either partially supported or not supported by ActionScript
for Flash Lite 2.0.
Commands issued through fsCommand and fsCommand2. . . . . . . . . . . . . . . . . . . . . 7
Commands partially supported or unsupported by fsCommand . . . . . . . . . . . . . . . . . 8
Partially supported global properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Commands issued through fsCommand
and fsCommand2
The fsCommand() and fsCommand2() global functions let the SWF file communicate with
either Flash Player or the program that is hosting Flash Player, such as a web browser.
Flash Lite 2.0 modifies the standard Flash Player 7 commands, and adds commands that are
specific to embedded devices. Flash Lite 2.0 also supports the fsCommand2() function, which
provides similar functionality to fsCommand(), with the exception that the command is
executed immediately, not deferred until after the calling frame is processed.
For more information on the fsCommand2() function, see the Flash Lite 2.x ActionScript
Language Reference.

8 Unsupported and Partially Supported ActionScript Elements
Commands unsupported and partially supported by
fsCommand
The following table lists the commands that are unsupported by fsCommand() when using
ActionScript 2.0 to create Flash Lite content.
Commands partially supported or
unsupported by fsCommand
The following table lists the ActionScript commands, functions, and keywords that are either
partially or not supported by Flash Lite 2.0.
Command Description
quit Closes the projector.
fullscreen Specifying true sets Flash Player to full-screen mode.
Specifying false returns the player to normal menu view.
allowscale Specifying false sets the player so the SWF file is always drawn
at its original size and is never scaled. Specifying true forces the
SWF file to scale to 100% of the screen.
showmenu Specifying true enables the full set of context menu items.
Specifying false hides all the context menu items except About
Flash Player and Settings.
exec Executes an application from within the projector.
trapallkeys Specifying true sends all key events, including accelerator keys,
to the onClipEvent(keyDown/keyUp) handler in Flash Player.
Command, function,
or keyword
Description Support
asfunction A protocol for URLs in HTML text fields. Not supported
fscommand() Function that lets the SWF file communicate
with either Flash Player or the program hosting
Flash Player, such as a web browser.
Partially
supported
on Prefix for events to execute when the event
occurs.
Limitation: The supported events are rollout,
rollover, and keyPress.
Partially
supported

Commands partially supported or unsupported by fsCommand 9
onClipEvent Event handler; triggers actions defined for a
specific instance of a movie clip.
Limitations: Supported events are press, load,
unload, enterFrame, keyDown, keyup, and data.
The mouseDown, mouseUp, and mouseMove events
are supported if either
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
onUpdate The onUpdate event handler is defined for a live
preview used with a component.
Not supported
print() The print() function targets the movie clip
according to the boundaries specified in the
parameter.
Not supported
printAsBitmap() A function that prints the target movie clip as a
bitmap.
Not supported
printAsBitmaNum() A function that prints a level in Flash Player as a
bitmap according to the boundaries specified in
the parameter (bmovie, bmax, or bframe).
Not supported
printNum() A function that prints the level in Flash Player
according to the boundaries specified in the
boundingBox parameter (bmovie, bmax, or bframe).
Not supported
startDrag() A function that makes the target movie clip
draggable while the SWF is playing. Only one
movie clip can be dragged at a time.
Limitation: Supported if mouse or stylus
interface is supported.
Partially
supported
stopDrag() A function that stops the current drag operation.
Limitation:Supported if mouse or stylus
interface is supported.
Partially
supported
updateAfterEvent() A function that updates the display
(independent of the frames per second set for
the SWF file) when you call it in an
onClipEvent() handler or as part of a function or
method that you pass to setInterval().
Not supported
Command, function,
or keyword
Description Support

10 Unsupported and Partially Supported ActionScript Elements
Partially supported global properties
The following table lists the ActionScript global properties that are partially supported by
Flash Lite 2.0.
Properties Description Support
_droptarget Read-only property that returns the absolute path in
slash (/) syntax notation of the movie clip instance on
which the draggableInstanceName (the name of a movie
clip instance that was the target of a startDrag()
function was dropped. This property always returns a
path that starts with a slash (/).
Partially
supported
_highquality Global property that specifies the level of anti-aliasing
applied to the current SWF file. This property can also
control bitmap smoothing.
Limitation: Flash Lite does not support bitmap
smoothing.
Partially
supported
_url Read-only property that retrieves the URL of the SWF
file from which the movie clip was downloaded.
Partially
supported

11
2
CHAPTER 2
Unsupported and Partially
Supported Classes
This chapter describes ActionScript 2.0 classes that are either partially or not supported by
Flash Lite 2.0. It also describes the extensions that are specific to ActionScript for Flash Lite
2.0.
Button class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Date class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Key class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Mouse class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
MovieClip class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SharedObject class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
System class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
capabilities (System.capabilities) class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Sound class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Stage class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
TextField class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
TextFormat class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Video class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Button class
All button symbols in a SWF file are instances of the Button object. The Button class provides
methods, properties, and event handlers for working with buttons.
For more information about the Button class, see the following:
■Developing Flash Lite 2.x Applications
■Chapter 10, “Handling Events” in Learning ActionScript 2.0 in Flash
■Chapter 2, “ActionScript Classes,” in Flash Lite 2.x ActionScript Language Reference

12 Unsupported and Partially Supported Classes
Property summary
The following table lists the properties that are either partially or not supported by the Button
class when using ActionScript for Flash Lite 2.0.
Event summary
The following table lists the event handlers that are partially supported by the Button class
when using ActionScript for Flash Lite 2.0.
Property Description Support
menu An object that associates a ContextMenu object
with a button.
Not supported
trackAsMenu A Boolean value that indicates whether other
buttons can receive mouse release events.
Supported if System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
useHandCursor A Boolean value that indicates whether the pointer
appears when the mouse passes over a button.
Not supported
_xmouse Read-only; the xcoordinate of the pointer, relative
to a button instance. Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
_ymouse Read-only; the ycoordinate of the pointer, relative
to a button instance. Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
Event Description Support
onDragOut Invoked when the mouse button is clicked over
the button and the pointer then dragged outside of
the button.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported

Date class 13
Date class
The Date class shows how dates and times are represented in ActionScript, and it supports
operations for manipulating dates and times. The Date class can also obtain the current date
and time from the operating system.
For more information about the Date class, see the following:
■Developing Flash Lite 2.x Applications
■Chapter 4, “Data and Data Types” in Learning ActionScript 2.0 in Flash
■Chapter 2, “ActionScript Classes,” in Flash Lite 2.x ActionScript Language Reference
Method summary
The following table lists the methods (functions) that have been added to the Date class when
using ActionScript for Flash Lite 2.0.
onDragOver Invoked when the pointer is dragged over the
button. Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
onReleaseOutside Invoked when the mouse is released while the
pointer is outside the button after the button is
pressed while the pointer is inside the button.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
Method Description
getLocaleLongDate() This function sets a parameter to a string that represents the current
date, in long form, formatted according to the currently defined locale.
The parameter is passed in by name. The returned value is a multiple-
character, variable-length string. The actual formatting depends on
the device and the locale.
Event Description Support

14 Unsupported and Partially Supported Classes
Key class
The Key class provides methods and properties for obtaining information about the keyboard
itself, and the key presses input into it.
For more information about the Key class, see the following:
■Developing Flash Lite 2.x Applications
■Chapter 14, “Creating Interaction with ActionScript” in Learning ActionScript 2.0 in Flash
■Chapter 2, “ActionScript Classes,” in Flash Lite 2.x ActionScript Language Reference
Flash Lite property extensions
The following table lists the property that has been added to the Key class when using
ActionScript for Flash Lite 2.0.
Flash Lite method extensions
The following table lists the method extension that has been added to the Key class when
using ActionScript for Flash Lite 2.0.
getLocaleShortDate() This function sets a parameter to a string that represents the current
date, in abbreviated form, formatted according to the currently
defined locale. The parameter is passed in by name. The returned
value is a multiple-character, variable-length string. The actual
formatting depends on the device and the locale.
getLocaleTime() This function sets a parameter to a string that represents the current
time, formatted according to the currently defined locale. The
parameter is passed in by name. The returned value is a multiple-
character, variable-length string. The actual formatting depends on
the device and the locale.
Property Description Support
isToggled Returns true if the Num Lock or Caps Lock key is
active.
Not supported
Method Description
getCode() Returns the virtual key code of the last key pressed.
Method Description

Mouse class 15
The Flash Lite 2.0 implementation of the getCode() method returns a string or a number,
depending on what the platform passed in. The only valid key codes are the standard key
codes accepted by this class and the “special” key codes listed as properties of the
ExtendedKey class. This restriction is enforced by the player. For valid key code values, see the
Key class in the Flash Lite 2.x ActionScript Language Reference. This reference provides tables
that map keys to codes for letters, numbers, the numeric keypad, function keys, special
constant keys, and other keys.
Mouse class
The Mouse class lets you control the mouse in a SWF file; for example, this class lets you hide
or show the mouse pointer.
For more information about the Mouse class, see the following references:
■Developing Flash Lite 2.x Applications
■Chapter 14, “Creating Interaction with ActionScript” in Learning ActionScript 2.0 in Flash
■Chapter 2, “ActionScript Classes,” in Flash Lite 2.x ActionScript Language Reference
Method summary
The following table lists the methods that are either partially or not supported by the Mouse
class when using ActionScript for Flash Lite 2.0.
Method Description Support
addListener() Registers an object to receive notifications of the
onMouseDown, onMouseMove, onMouseUp, and
onMouseWheel listeners.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
hide() Hides the pointer in a SWF file. Not supported
removeListener() Removes an object that was previously registered
with addListener().
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
show() Displays the pointer in a SWF file. Not supported

16 Unsupported and Partially Supported Classes
Event summary
The following table lists the events that are either partially or not supported by the Mouse
class when using ActionScript for Flash Lite 2.0.
MovieClip class
The MovieClip class lets you use listener callback functions that provide status information
while SWF or JPEG files load (download) into movie clips. To use MovieClip features, use
MovieClipLoader.loadClip() instead of loadMovie() or MovieClip.loadMovie() to
load SWF files.
For more information about the MovieClip class, see the following:
■Developing Flash Lite 2.x Applications
■Chapter 11, “Working with Movie Clips” in Learning ActionScript 2.0 in Flash
■Chapter 2, “ActionScript Classes,” in Flash Lite 2.x ActionScript Language Reference
Event Description Support
onMouseDown Notified when the mouse is pressed.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
onMouseMove Notified when the mouse moves.
Limitations: Supported if
System.capabilities.hasMouse is set to true.
Partially
supported
onMouseUp Notified when the mouse is released.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
onMouseWheel Notified when the user rolls the mouse wheel. Not supported

MovieClip class 17
Method summary
The following table lists the methods that are either partially or not supported by the
MovieClip class when using ActionScript for Flash Lite 2.0.
Method Description Support
attachAudio() Captures and plays local audio from the devices
microphone hardware.
Not supported
getTextSnapshot() Returns a TextSnapshot object that contains the
text in the static text fields in the specified movie
clip.
Not supported
startDrag() Specifies a movie clip as draggable and begins
dragging the movie clip.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
stopDrag() Stops a MovieClip.startDrag() method. A movie
clip that was made draggable with startDrag()
remains draggable until a stopDrag() method is
added, or until another movie clip becomes
draggable. Only one movie clip is draggable at a
time.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported

18 Unsupported and Partially Supported Classes
Property summary
The following table lists the properties that are either partially or not supported by the
MovieClip class when using ActionScript for Flash Lite 2.0.
Property Description Support
_droptarget Returns the absolute path in slash-syntax notation
of the movie clip instance on which this movie clip
was dropped. The _droptarget property always
returns a path that starts with a slash (/). To
compare the _droptarget property of an instance
to a reference, use the eval() function to convert
the returned value from slash syntax to a dot-
syntax reference.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
menu Associates the specified ContextMenu object with
the movie clip.
Not supported
_quality Sets or retrieves the rendering quality used for a
SWF file. Device fonts are always aliased and
therefore are unaffected by the _quality property.
Partially
supported
trackAsMenu A Boolean value that indicates whether other
buttons or movie clips can receive mouse release
events. The trackAsMenu property lets you create
menus. You can set the trackAsMenu property on
any button or movie clip object. If the trackAsMenu
property does not exist, the default behavior is
false.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
useHandCursor A Boolean value that determines whether the hand
icon appears when the mouse rolls over a movie
clip.
Not supported

MovieClip class 19
Event summary
The following table lists the event handlers that are partially supported by the MovieClip class
when using ActionScript for Flash Lite 2.0.
_xmouse Returns the x coordinate of the mouse position.
Limitations: Supported if
System.capabilities.hasMouse=true or
System.capabilities.hasStylus=true.
Partially
supported
_ymouse Returns the y coordinate of the mouse position.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
Event Handler Description Support
onDragOut Invoked when the mouse button is pressed and the
pointer rolls outside the object. You must define a
function that executes when the event handler is
invoked. You can define the function on the
timeline or in a class file that extends the
MovieClip class or is linked to a symbol in the
library.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
onDragOver Invoked when the pointer is dragged outside and
then over the movie clip. You must define a
function that executes when the event handler is
invoked. You can define the function on the
timeline or in a class file that extends the
MovieClip class or is linked to a symbol in the
library.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
onMouseDown Invoked when the left mouse button is pressed.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
Property Description Support

20 Unsupported and Partially Supported Classes
SharedObject class
A Flash Lite shared object, as implemented in the ActionScript SharedObject class, allows
Flash Lite content to save data to the device when the application is closed and load the data
from the device when the application is played again.
For more information about the SharedObject class, see the following references:
■Developing Flash Lite 2.x Applications
■Chapter 14, “Creating Interaction with ActionScript” in Learning ActionScript 2.0 in Flash
■Chapter 2, “ActionScript Classes,” in Flash Lite 2.x ActionScript Language Reference
onMouseMove Invoked every time the mouse moves.
Limitations: Supported if
System.capabilities.hasMouse is set to true.
Partially
supported
onMouseUp Invoked every time the left mouse button is
pressed.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
onReleaseOutside Invoked when the mouse button is pressed over a
movie clip and released while the pointer is outside
the movie clip’s area.
Limitations: Supported if
System.capabilities.hasMouse or
System.capabilities.hasStylus are set to true.
Partially
supported
Event Handler Description Support