Download E-books Programming Windows: Writing Windows 8 Apps With C# and XAML (Developer Reference) PDF

By Charles Petzold

Reimagined for full-screen and touch-optimized apps, home windows eight presents a platform for achieving new clients in new methods. In reaction, programming legend Charles Petzold is rewriting his vintage Programming Windows—one of the most well-liked programming books of all time—to express builders easy methods to use current abilities and instruments to construct home windows eight apps.

Programming Windows, 6th version makes a speciality of growing home windows eight apps gaining access to the home windows Runtime with XAML and C#. The e-book additionally offers C++ code samples. The 6th version is prepared in parts:

  • Part I, “Elementals,” starts off with the interrelationship among code and XAML, easy occasion dealing with, dynamic structure, controls, templates, asynchronous processing, the appliance bar, keep watch over customization, and collections. you want to emerge from half I able to create subtle page-oriented collection-based consumer interfaces utilizing the robust ListView and GridView controls.
  • Part II, “Specialties,” explores issues you could no longer want for each software yet are necessary to a well-rounded schooling in home windows eight. those contain multitouch, bitmap pics, interfacing with percentage and seek amenities, printing, operating with the sensors (GPS and orientation), textual content, acquiring enter from the stylus (including handwriting recognition), getting access to internet providers, calling Win32 and DirectX features, and bringing your program to the home windows eight app shop.

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History = brush; base. OnTapped(args); } Now if you happen to faucet a TextBlock aspect, it adjustments colour, but if you faucet at any place else at the display, the Grid alterations colour. Now feel for one cause or one other, you opt you must return to the unique scheme of explicitly defining an occasion handler individually for every TextBlock point to alter the textual content shades, yet you furthermore may are looking to hold the OnTapped override for altering the Grid history colour. within the RoutedEvents4 venture, the XAML dossier has the Tapped occasions restored for TextBlock components and the Grid has been given a reputation: venture: RoutedEvents4 | dossier: BlankPage. xaml (excerpt) One virtue is that the easy methods to set the TextBlock and Grid colours at the moment are separate and certain, so there’s little need for if-else blocks. The Tapped handler for the TextBlock parts can forged the sender argument with impunity, and the OnTapped override can easily entry the Grid through identify: eighty five Project: RoutedEvents4 | dossier: BlankPage. xaml. cs (excerpt) public sealed partial type BlankPage : web page { Random rand = new Random(); byte[] rgb = new byte[3]; public BlankPage() { this. InitializeComponent(); } void OnTextBlockTapped(object sender, TappedRoutedEventArgs args) { TextBlock txtblk = sender as TextBlock; txtblk. Foreground = GetRandomBrush(); } secure override void OnTapped(TappedRoutedEventArgs args) { contentGrid. historical past = GetRandomBrush(); base. OnTapped(args); } Brush GetRandomBrush() { rand. NextBytes(rgb); colour clr = colour. FromArgb(255, rgb[0], rgb[1], rgb[2]); go back new SolidColorBrush(clr); } } despite the fact that, the code will possibly not do just what you will have. in the event you faucet a TextBlock, not just does the TextBlock switch colour, however the occasion maintains to move up the visible tree the place it’s processed through the OnTapped override, and the Grid alterations colour to boot! If that’s what you will have, you’re in good fortune. If no longer, then I’m yes you’ll have an interest to understand that the TappedRoutedEventArgs has a estate in particular to avoid this. If the OnTextBlockTapped handler units the dealt with estate of the development arguments to real, the development is successfully inhibited from extra processing larger within the visible tree. this can be confirmed within the RoutedEvents5 undertaking, that's similar to RoutedEvents4 with the exception of a unmarried assertion within the OnTextBlockTapped technique: undertaking: RoutedEvents5 | dossier: BlankPage. xaml. cs (excerpt) void OnTextBlockTapped(object sender, TappedRoutedEventArgs args) { TextBlock txtblk = sender as TextBlock; txtblk. Foreground = GetRandomBrush(); args. dealt with = real; } 86 Overriding the dealt with environment You’ve simply noticeable that after a component handles an occasion reminiscent of Tapped and concludes its occasion processing by means of atmosphere the dealt with estate of the development arguments to precise, the routing of the development successfully stops.

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