The document discusses the use of C++ in Windows Phone apps, highlighting its support in various app formats and the advantages it offers such as reusability, portability, and performance. It covers the features of C++11 and the Windows Runtime (WinRT), emphasizing why developers should consider adopting it for their applications. Additionally, it outlines the benefits of transitioning from Windows Phone Silverlight to newer platforms for enhanced functionality and future investment.

1. www.italiancpp.org
C++ in Windows Phone
Apps
Mirco Vanini – Microsoft MVP Windows Embedded

2. Italian C++ Community
Agenda
The New Old Platform
How & where C++ is supported
When and why to use C++
Introduction to the Windows (Phone) Runtime
Sharing C++ code (demo)
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3. Italian C++ Community
The New Old Platform
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4. Italian C++ Community
How: Windows Phone C++ Support
Can be used in any Windows Phone App
Visual Studio Express 2012/3/(5) for Windows Phone
Same C++ compiler & CRT used in Windows 8
Subset of C++ 11 standard features
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5. Italian C++ Community
Sampling of C++ 11 Standard Features
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RValue references Forward declared enums Bidirectional fences
static_assert Alignment Data-dependency ordering
Auto Standard-layout and trivial types exception_ptr
Trailing return types Extended friend declarations Thread-local storage
Lambdas Local and unnamed types as template arguments __func__
Decltype Range-based for-loop C99 preprocessor
Right angle brackets override and final long long
extern templates Minimal GC support Strongly typed enums
nullptr Atomics
C++11 Features in Visual C++ 11
Announcing the Visual C++ Compiler November 2013

6. Italian C++ Community
Why use C++
Reusability: You have some legacy code around that you really don't
want to rewrite but still use in your app
Portability: You want to use the code you're about to write on
multiple platforms
Performance: You really are in need for these last bits of
performance benefits and know what you're doing
Personal Preference: You are a developer who really favors C++ over
e.g. C# or you have significantly better skills in C++
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7. Italian C++ Community
Where you can use C++
All Windows Phone 8 apps can use native code…
◦ XAML apps (8.1)
◦ XAML apps mixed with D3D and WinRT
◦ Pure native D3D apps/games
◦ C++ libraries: Dynamic Link Libraries, Static Libs
◦ WinRT C++ Components
...not all apps need to use native code
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WP 7.0
Silverlight
WP 7.5
Silverlight
WP 8.0
Silverlight
WP 8.1
Silverlight
WP 8.1
WinRT

8. Italian C++ Community
Why stay on Windows Phone Silverlight?
Existing Code Investment
Existing Install Base
Not yet converged
◦ Camera Lenses
◦ VoIP
◦ Lock Screen Wallpaper.
◦ Clipboard API
◦ Simple Sound Effects (XNA)
◦ Run Under Lock Screen
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9. Italian C++ Community
Why Retarget to Windows Phone Silverlight 8.1?
Access to SD Cards
Geofencing
App to App SSO (Single Sign-On)
App to App sharing
And much more…
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10. Italian C++ Community
Windows Phone Runtime
Why learn about WinRT?
◦ WinRT is used in the application model
◦ C++ code called from XAML uses WinRT
◦ Phone Platform APIs are built using WinRT
◦ More Convergence
◦ Latest Tooling
◦ New Controls
◦ Future Investment
◦ Same ECMA-335 standard as .NET
◦ Type-System Projections
◦ CLR Projection
◦ Framework Projection
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11. Italian C++ Community
A Closer Look at What's Available
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Direct3D with XAML" C++ application actually creates a C# main
project and a separate Windows Runtime Component in C++.

12. Italian C++ Community
Sharing C++ code
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Recap / Q&A
Welcome back to C++!
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Contact
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Blog http://mircovanini.blogspot.com
Email info@proxsoft.it
Web www.proxsoft.it
Twitter@MircoVanini