Book Image

Windows Application Development Cookbook

By : Marcin Jamro
Book Image

Windows Application Development Cookbook

By: Marcin Jamro

Overview of this book

Need to ensure you can always create the best Windows apps regardless of platform? What you need are solutions to the biggest issues you can face, so you can always ensure you’re making the right choices and creating the best apps you can. The book starts with recipes that will help you set up the integrated development environment before you go ahead and design the user interface. You will learn how to use the MVVM design pattern together with data binding, as well as how to work with data in different file formats. Moving on, you will explore techniques to add animations and graphics to your application, and enable your solution to work with multimedia content. You will also see how to use sensors, such as an accelerometer and a compass, as well as obtain the current GPS location. You will make your application ready to work with Internet-based scenarios, such as composing e-mails or downloading files, before finally testing the project and submitting it to the Windows Store. By the end of the book, you will have a market-ready application compatible across different Windows devices, including smartphones, tablets, and desktops.
Table of Contents (11 chapters)

Handling the pinch touch event


Another interesting touch event is pinch, also referred to as zoom. While using it, the content could become smaller or bigger. In this recipe, you will learn how to handle this event in the case of an image presented on the page.

Getting ready

To step through this recipe, you need only the automatically generated project.

How to do it...

To prepare the example that handles the pinch touch event to scale the image presented on the page, perform the following steps:

  1. Add the Photo.jpg file to the Assets directory.

  2. Add an image to the page, support the necessary manipulation modes, and define a scaling transform. Do this by modifying the content of the MainPage.xaml file, as follows:

            <Page (...)> 
                <Grid> 
                    <Image  
                        Source="/Assets/Photo.jpg" 
                        ImageOpened="Image_ImageOpened" 
                        ManipulationMode="Scale,ScaleInertia" 
                        ManipulationDelta="Image_ManipulationDelta...