Programming Windows® SIXTH EDITION Release Preview eBook Writing Windows 8 Apps With C# and XAML Charles Petzold PUBLISHED BY Microsoft Press A Division of Microsoft Corporation One Microsoft Way Redmond, Washington 98052-6399 Copyright © 2012 Charles Petzold All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form or by any means without the written permission of the publisher. ISBN: 978-0-7356-7176-8 This document supports a preliminary release of a software product that may be changed substantially prior to final commercial release. This document is provided for informational purposes only and Microsoft makes no warranties, either express or implied, in this document. Information in this document, including URL and other Internet website references, is subject to change without notice. The entire risk of the use or the results from the use of this document remains with the user. 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Acquisitions, Developmental, and Project Editor: Devon Musgrave Technical Reviewer: Marc Young Cover: Twist Creative • Seattle Introduction ......................................................................................................... 9 The Versions of Windows 8 ....................................................................................................................................................... 9 The Focus of This Book ............................................................................................................................................................. 10 The Approach ............................................................................................................................................................................... 12 My Setup ........................................................................................................................................................................................ 13 The Programming Windows Heritage .................................................................................................................................. 13 Behind the Scenes ....................................................................................................................................................................... 16 Errata & Book Support .............................................................................................................................................................. 17 We Want to Hear from You ..................................................................................................................................................... 17 Stay in Touch ................................................................................................................................................................................ 17 Chapter 1: Markup and Code .......................................................................... 18 The First Project ........................................................................................................................................................................... 18 Graphical Greetings .................................................................................................................................................................... 24 Variations in Text ......................................................................................................................................................................... 28 Media As Well .............................................................................................................................................................................. 36 The Code Alternatives ............................................................................................................................................................... 37 Images in Code ............................................................................................................................................................................ 41 Not Even a Page .......................................................................................................................................................................... 43 Chapter 2: XAML Syntax .................................................................................. 45 The Gradient Brush in Code .................................................................................................................................................... 45 Property Element Syntax .......................................................................................................................................................... 48 Content Properties...................................................................................................................................................................... 51 The TextBlock Content Property............................................................................................................................................. 55 Sharing Brushes (and Other Resources) ............................................................................................................................... 57 Resources Are Shared ................................................................................................................................................................ 61 A Bit of Vector Graphics ............................................................................................................................................................ 62 Stretching with Viewbox ........................................................................................................................................................... 71 Styles ............................................................................................................................................................................................... 74 A Taste of Data Binding ............................................................................................................................................................ 80 3 Chapter 3: Basic Event Handling .................................................................... 83 The Tapped Event ........................................................................................................................................................................ 83 Routed Event Handling ............................................................................................................................................................. 86 Overriding the Handled Setting ............................................................................................................................................. 92 Input, Alignment, and Backgrounds ..................................................................................................................................... 93 Size and Orientation Changes ................................................................................................................................................ 97 Bindings to Run? .......................................................................................................................................................................101 Timers and Animation .............................................................................................................................................................103 Chapter 4: The Border Element ..................................................................... 111 The Border Element ..................................................................................................................................................................111 Rectangle and Ellipse ...............................................................................................................................................................115 The StackPanel ...........................................................................................................................................................................117 Horizontal