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The Touch Language, Its Translations, and Mouse/Keyboard Equivalents On the Windows Developer Center, the rather extensive article on Touch interaction design is helpful for designers and developers alike. It discusses various ergonomic considerations, has some great diagrams on the sizes of human fingers, provides clear guidance on the proper size for touch targets given that human reality, and outlines key design principles such as providing direct feedback for touch interaction (animation) and having content follow your finger. Most importantly, the design guidance also describes the Windows 8 Touch Language, which contains the eight core gestures that are baked into the system and the controls. The table below shows and describes the gestures and indicates what events appear in the app for them. Gesture Meaning and Gesture Events Description One finger touches the screen and lifts up. Tap for primary action (commanding); appears as click and MSGestureTap events on the element. Tapping on an element invokes its primary action, typically executing a command, checking a box, setting a rating, positioning a cursor, etc. One finger touches the screen and stays in place. Press and hold to learn; appears as contextmenu and MSGestureHold events on the element. This touch interaction displays detailed information or teaching visuals (for example, a tooltip or context menu) without a commitment to an action. Anything displayed this way should not prevent users from panning if they begin sliding their finger. One or more fingers touch the screen and move in the same direction. Slide to pan (can be horizontal or vertical); appears as scrolling events as well as a gesture series (MSGestureStart, MSGestureChange, MSGestureEnd, possibly with inertial gesture events signaled by MSInertiaStart, plus MSPointer* events). Slide is used primarily for panning interactions but can also be used for moving, drawing, or writing. Slide can also be used to target small, densely packed elements by scrubbing (sliding the finger over related objects such as radio buttons). 366
One or more fingers touch the screen and move a short distance in the same direction. Two or more fingers touch the screen and move closer together or farther apart. Swipe to select, command, and move (can be horizontal or vertical)—also called cross-slide; appears as a gesture series (MSGestureStart, MSGestureChange, MSGestureEnd, as well as MSPointer* events). The gesture recognizer doesn’t distinguish this from vertical panning, however, so an app or control needs to implement that interpretation directly (a good reason to use controls like the ListView!). Pinch and stretch to zoom; appears as a gesture series (MSGestureStart, MSGestureChange, MSGestureEnd), but apps can use the -ms-content-zooming: zoom and -ms-touch-action: pinch-zoom <strong>CSS</strong> styles to enable touch zooming automatically. Sliding the finger a short distance, perpendicular to the panning direction, selects objects in a list or grid; also implies displaying commands in an app bar relevant to the selection. Can be used for optical zoom or resizing, as well as for semantic zoom where applicable. Two or more fingers touch the screen and move in a clockwise or counter-clockwise arc. Turn to rotate; appears as a gesture series (MSGestureStart, MSGestureChange, MSGestureEnd). Rotates an object or a view. Swipe from top or bottom edge for app commands; handled automatically through the AppBar control, though an app can also detect these events directly through Windows.UI.Input.EdgeGesture. The bottom app bar contains app commands for the current page context; the top app bar provides for navigation, if applicable. Swipe from edge for system commands; handled automatically by the system with the app receiving events related to the selected charm, when applicable, as well as focus and blur events if the foreground app is changed when swiping from the left edge. Swiping from the right displays the Charms bar; swiping from the left cycles through currently running apps; swiping from the top edge to the bottom closes the current app; swiping from the top edge to the left or right snaps the current app to one side of the screen. Additional details and guidelines for designing around this touch language can be found on the Gestures, manipulations, and interactions topic. 367
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Table of Contents Introduction ....
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WinJS Tools for Pages and Page Navi
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Chapter 6: Layout .................
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Design Guidelines for Settings ....
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Manipulating Audio and Video ......
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Managing Secondary Tiles ..........
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The User Profile (and the Lock Scre
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The Windows Store APIs ............
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Introduction Welcome, my friends, t
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I'm also assuming that your interes
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Acknowledgements In many ways, this
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Support for developers, however, ca
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technologies, including DirectX, XA
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The upload process will walk you th
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FIGURE 1-2 A typical app page in th
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do this, I’m sure!). In a hotel,
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The app host is more or less Intern
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Sidebar: Mixed Language Apps Window
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When snapped, on the other hand, ap
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Capability Description Prompts for
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Taking a Break, Getting Some Rest:
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So you might say, “Well, I should
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that the user has to configure the
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Fortunately, the Windows Store dash
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graphics called for in the design s
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4. After Visual Studio churns for a
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Add-AppxDevPackage. That batch file
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package, whereas a single / refers
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QuickStart #1: Here My Am! and an I
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FIGURE 2-8 Snapped wireframe (left;
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which we’ll instantiate a Bing ma
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orientation, screen resolution, and
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FIGURE 2-12 Full-screen landscape v
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What this means is that, for the mo
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Create the map (though the namespac
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Next, in the second parameter to po
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FIGURE 2-17 Setting the Location ca
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Here we’re providing capturePhoto
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the contract is an abstraction that
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Extra Credit: Receiving Messages fr
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Note that such apps might not be ab
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Chapter 3 App Anatomy and Page Navi
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content and controls from web servi
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Such capabilities are blocked becau
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Can you do any kind of dynamic page
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appdata. This happens via Windows.S
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I don’t know about you, but I rea
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telling you to not use it! After al
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App Activation First, let me congra
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In the table, note that 80% scale t
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Activation Code Paths As we saw in
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splashScreen SplashScreen Contains
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In truth, so long as the user keeps
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Of course, setPromise ultimately do
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previousExecutionState values are d
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object to which you can add whateve
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Because we stored lastPosition in s
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FIGURE 3-9 The output of the Simple
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What about launching from the previ
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For all other details on this funct
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The Navigation App Template, PageCo
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(function () { "use strict"; WinJS.
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}, ); if (that.pageElement.winContr
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Sidebar: Helping Out IntelliSense I
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thousands of items, where tapping a
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Completing the Promises Story Whew!
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mechanism on top of singular XHR op
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The story of controls in Windows 8
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Creating or instantiating HTML cont
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Hyperlink href, target Link text L
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defined as part of the WinJS.UI nam
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Clearly, then, the bulk of the work
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var element = document.getElementBy
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This example is taken directly from
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FIGURE 4-7 Expanding a WinJS contro
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Flexbox -ms-[inline-]flexbox (value
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Note Though not shown here, you can
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For the ToggleSwitch, win-* classes
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• If a WinJS.UI.Tooltip is gettin
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Custom Control Examples To see thes
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Between calendar.js and calendar.cs
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]]> Whe
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This would be appropriate if you cr
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Two-way: essentially one-way bindin
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The code for this can be found in T
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Sidebar: Data-Binding Properties of
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Implementing Two-Way Binding To imp
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• oneTime A function that just lo
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• Windows 8 apps have rich stylin
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Collection Control Basics To seek t
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indingList: bindingList, array: arr
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Now while the ListView control in S
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The header template in html/scenari
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In the modified sample I changed na
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} return groupCompareGlobalized(lef
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a function instead of a declarative
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var list = new WinJS.Binding.List()
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data-win-options="{ itemDataSource:
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e used anywhere it’s appropriate,
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If you were to provide your own nav
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sample code in this chapter’s com
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Because of data binding, changes to
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What is does have, however, is this
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What you then do inside the element
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• The groups themselves are all s
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and the current viewable area. Thou
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Styling Following the precedent of
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Technically speaking, the layout pr
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or you can set layout.groupInfo fro
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Using the first item’s dimension
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You can set a breakpoint in this fu
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Incremental Loading Apart from pote
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The yellow bars indicate execution
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If it’s not provided (as when the
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During initialization (outside the
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Chapter 6 Layout Compared to other
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that appear when needed through app
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Within the body of content, then, W
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} -ms-grid-columns: 120px 2fr 80px
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-ms-scroll-snap-x Shorthand to comb
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WinRT: filled -ms-view-state: fille
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Handling View States As I just ment
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var mql = window.matchMedia("(-ms-v
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individual items in snapped view. B
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FIGURE 6-5 Options for display size
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If your developer sensibilities obj
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Content goes here This is really
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Such a layout is most easily achiev
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Because the specs themselves are st
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/* In CSS */ #divMain { width: 100%
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CSS styles that are supported for W
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Within the activated handler docume
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Multicolumn Elements and Regions Tr
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FIGURE 6-9 CSS region chains to flo
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Chapter 7 Commanding UI For consume
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• Commands that can’t be placed
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which provide many specifics on pla
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Tip To prevent the app bar from app
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This example doesn’t provide any
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var appbar = document.getElementByI
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• afterhide occurs immediately af
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This button’s click handler uses
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In the extraClass properties we’v
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To provide graphics of your own, do
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It should come as no surprise by
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Flyouts and Menus Going back to our
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are optional with show. (Note also
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function confirmOrder() { bought =
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The point of this last example is t
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Also, go into css/header-menu.c
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In the contextmenu handler menu.sho
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Scenario 3 is identical to Scenario
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The app bar now appears as follows,
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This message will appear if the use
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Chapter 8 State, Settings, Files, a
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while our permanent home was being
Page 315 and 316: • Account and profile configurati
Page 317 and 318: By the way, you might have some rea
Page 319 and 320: var localSettings = Windows.Storage
Page 321 and 322: It is also possible to migrate app
Page 323 and 324: Tip There are some file extensions
Page 325 and 326: Sidebar: Closing Streams vs. Closin
Page 327 and 328: Using App Data APIs for State Manag
Page 329 and 330: efore setting up new defaults. As m
Page 331 and 332: Roaming State The automatic roaming
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Page 335 and 336: Each app-supplied command can do on
Page 337 and 338: There are two ways to implement thi
Page 339 and 340: function helpCommandInvoked(e) { va
Page 341 and 342: Programmatically Invoking Settings
Page 343 and 344: Sidebar: Changes to Permissions A c
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Page 347 and 348: eturns an appropriate StorageFile o
Page 349 and 350: function pickSinglePhoto() { // Ver
Page 351 and 352: When picking multiple files, the re
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Page 355 and 356: scenario oriented on the music libr
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Page 361 and 362: What We’ve Just Learned • State
Page 363 and 364: Chapter 9 Input and Sensors Touch i
Page 365: • Second, when you need to handle
Page 369 and 370: You might notice a conspicuous abse
Page 371 and 372: Note that this method has no effect
Page 373 and 374: • TouchCapabilities Properties ar
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Page 377 and 378: Properties Description currentPoint
Page 379 and 380: The first step to receiving gesture
Page 381 and 382: • MSGestureHold occurs when MSPoi
Page 383 and 384: FIGURE 9-3 A conceptual representat
Page 385 and 386: FIGURE 9-4 The Input Instantiable G
Page 387 and 388: obviously a specific deceleration m
Page 389 and 390: • Process keydown, keyup, and key
Page 391 and 392: For passwords you get a key to hide
Page 393 and 394: keyboard sample. 50 Adding listener
Page 395 and 396: Standard Keystrokes The last piece
Page 397 and 398: FIGURE 9-9 The Input Ink sample wit
Page 399 and 400: (string), and timestamp (Date) prop
Page 401 and 402: Like all other WinRT APIs, however,
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Page 405 and 406: Chapter 10 Media To say that media
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Page 409 and 410: declared inline, created dynamicall
Page 411 and 412: } document.getElementById("r").styl
Page 413 and 414: function onImageError(source) { sou
Page 415 and 416: • By copying pixel data from a vi
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It’s also helpful to understand t
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Video Element Extension APIs Beyond
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vid.msInsertVideoEffect("GrayscaleT
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elements with the same source. The
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in the background. As a developer,
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function soundLevelChanged() { //Ca
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Playing Sequential Audio An app tha
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need to bypass the audio element an
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To guarantee the ordering we use Pr
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Thumbnails First, StorageFile.getTh
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or combination of System.GPS.Longit
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} return degrees + "°" + minutes +
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Most of the displayImageUI function
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provides a specific BitmapEncoder i
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method can be called only once and
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Transcoding and Custom Image Format
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Transcoding happens either from one
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In Scenario 2, the sample always us
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Media Capture There are times when
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ecordLimitationExceeded Fired when
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} captureInitSettings.videoDeviceId
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} // Add the devices to deviceList
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Streaming from a Server and Digital
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Here’s how such apps generally wo
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Next you’ll want to wire up handl
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• WinRT provides a rich API for m
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necessary. In this way, excessive a
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The Control Panel setting can be ob
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screen; the Panel animations are fo
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want to chain or synchronize animat
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Create addToList animation. var add
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CSS Animations and Transitions As n
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Animations work in an opposite mann
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Keyframes, while typically defined
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FIGURE 11-2 Output of Scenario 3 of
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What’s more, requestAnimationFram
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Still, 20% is a lot of CPU power to
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Chapter 12 Contracts Recently I dis
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File activation (file type associat
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more specific. For instance, when a
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var dataPackageTitle = document.get
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The other interesting part of Scena
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When sharing an image, don't forget
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FIGURE 12-3 The Share content targe
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• Acknowledge user actions when y
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The key here is the args.detail.sha
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target app. If you’re using image
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FIGURE 12-7 Controls to create a qu
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The question is how to wire up comm
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The Search contract that makes this
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FIGURE 12-11 The Search declaration
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} } })); In the search activation p
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} }); Windows.ApplicationModel.Sear
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The request object also has a getDe
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Type to Search The final feature of
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egistered for that type, rather tha
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At the very bottom of this UI you c
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ecord a new sound. In such cases, h
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Activation of a File Picker Provide
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Windows.ApplicationModel.Activation
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A final note is that a file picker
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}; // Create a file to provide back
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The next step for the provider is t
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FIGURE 12-18 The provider sample’
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FIGURE 12-21 The provider sample’
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• If the UI status is visible, sw
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Just as the file picker contract al
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Using the Contact Picker Contacts a
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} } }); Contact Picker Providers On
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As you can see, the homeEmail field
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Chapter 13 Tiles, Notifications, th
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FIGURE 13-1 The typical default Sta
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Selecting an item on the Start scre
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In many ways, live tiles might redu
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toss up lots of superfluous toast,
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Yet Windows doesn’t want to force
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The third way an app can issue upda
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Providing both square and wide stat
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• arguments A string that’s pas
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function activated(eventObject) { i
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16 or fewer characters that is used
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Third, if you supply an image that
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arrive on a Windows 8 machine will
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The Notifications Extensions Librar
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The other bits of the manifest that
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In such cases it would be better to
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Windows.UI.Notifications.BadgeUpdat
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you’d use start time), or the pha
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Tip The tile and badge updaters are
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eturned from page requests, as we
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through the Web platform installer.
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Toast Notifications So far in this
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FIGURE 13-16 Issuing text toasts th
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supports addImageQuery for scale, l
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A scheduled toast is created using
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To update a tile, set a badge, or i
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Your app should go through this sho
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matter of sending an XmlHttpRequest
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In the running app, the pushnotific
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Background Tasks and Lock Screen Ap
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FIGURE 13-18 The manifest editor fo
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In this code, the BackgroundTaskBui
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var internetCondition = new backgro
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The Background task sample provides
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Note Working with the lock screen i
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Debugging Background Tasks By this
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• Periodic updates for tiles and
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Network Information and Connectivit
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networkstatuschanged event that we
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Note Windows Store apps written in
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Programmatically, as noted before,
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Although this option will not set u
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hundred kilobytes—if you know fro
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Finally, avoid using XHR for large
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Starting a download transfer happen
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There is also a variation of create
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operations—it is possible to crea
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); "form-data", "------------------
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Basically, you would change the pol
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Authentication, Credentials, and th
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The result from pickAsync, as given
Page 659 and 660:
To clarify the relationship between
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There is one subtle difference betw
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Within the web authentication broke
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https://www.facebook.com/dialog/oau
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Single Sign On with Live Connect Be
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setAccountPicturesAsync (for provid
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And lastly it’s worth at least li
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} var scenario1Link = document.getE
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} return currentFeed.items[currentI
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When data arrives, the handler rece
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} // This is a helper function echo
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On the client side, StreamSocket ag
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And closing the socket in Scenario
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In the sample, we first create a Me
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} try { var size = dataWriter.measu
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What We’ve Just Learned • Netwo
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• Connecting with devices in the
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The XInput and JavaScript controlle
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function renderLoop() { var state =
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FIGURE 15-3 Sample device enumerati
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The Removable Storage sample, in Sc
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• Communications are supported on
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Advertising a Connection Making you
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Tap to Connect and Tap to Activate
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On a simpler note, publishing a URI
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FIGURE 15-5 Scenario 2 of the Print
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Print Document Sources No matter wh
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If you don’t add a handler for th
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The final bit to mention in the cod
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Indeed, when we speak of mixed lang
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Again, components can also make use
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Sidebar: WinRT Components vs. Class
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Once you add the name of a class an
Page 725 and 726:
With the basic mechanics worked out
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As we did with C#, let’s start by
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Comparing the Results The Image Man
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} return sum; Running a count with
Page 733 and 734:
Component Implementation • When c
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When this worker is started, the on
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FIGURE 16-4 A promise manages and i
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Note that Task.Run does not support
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As with C#, there are additional st
Page 743 and 744:
public IAsyncOperation ConvertPixel
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method called ConvertGrayscalFileAs
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Event names, on the other hand, are
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One challenge, as we saw in the qui
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The Building your own Windows Runti
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• Check against an encrypted lice
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Chapter 17 Apps for Everyone: Acces
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Your App, Your Business If you chec
Page 759 and 760:
FIGURE 17-1 Creating an app package
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desktop applications and distribute
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means is that if you want to promot
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You should also strongly consider m
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• In-app purchases through the Wi
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That said, WinRT provides for the f
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When your app accesses CurrentAppSi
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} }); currentApp.licenseInformation
Page 775 and 776:
You won’t hit your breakpoint imm
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If you’re using a custom commerce
Page 779 and 780:
You might have noticed that a Produ
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Id=\"e2a62d42-dbca-43d2-b779-66eb91
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The latter two we’ve already cove
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• aria-label Directly provides te
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Apart from the small bits of code i
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control sample, and switch between
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Scenario 2 shows similar effects wi
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Canvas a better choice? To this poi
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one resource. For a few examples of
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addition of new string and image re
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FIGURE 17-9 Control panel dialogs f
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Formatting Culture-Specific Data an
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Sorting and Grouping Just as a worl
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With images, you can reverse them w
Page 807 and 808:
Note CSS files can contain string l
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Manifest: Let’s turn now to the m
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Other affected files in this app in
Page 813 and 814:
Sidebar: String Resources in Settin
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the folder name itself doesn’t us
Page 817 and 818:
If you like, you can just send your
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FIGURE 17-11 The Multilingual App T
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Second, the Toolkit will detect if
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Localization Wrap-Up Well, we’re
Page 825 and 826:
Let me say that again: all of this
Page 827 and 828:
Onboarding and Working through Reje
Page 829 and 830:
Connecting Your Website If you have
Page 831 and 832:
What We’ve Just Learned • An ap
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What do you think of this book? We
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