A quick overview about the C++ support on a Windows Phone SDK with a particular focus about the reuse of LOB (Line Of Business) C++ code

1. App Windows Phone
in C++
#CDays14 – Roma - 23, 24 e 25 Settembre 2014
Mirco Vanini
info@proxsoft.it - @mircovanini
http://mircovanini.blogspot.it/

2. Grazie a
#CDays14 – Roma - 23, 24 e 25 Settembre 2014
Sponsor

3. Agenda
• How & where C++ is supported
• When and why to use C++
• Introduction to the Windows (Phone) Runtime
• Sharing C++ code (demo)
#CDays14 – Roma - 23, 24 e 25 Settembre 2014

4. How: Windows Phone C++ Support
• Can be used in any Windows Phone App
• Visual Studio Express 2012/3 for Windows Phone
• Same C++ compiler & CRT used in Windows 8
• Subset of C++ 11 standard features
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5. Sampling of C++ 11 Standard
Features
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
#CDays14 – Roma - 23, 24 e 25 Settembre 2014
__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. 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++
#CDays14 – Roma - 23, 24 e 25 Settembre 2014

7. 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
WP 7.0
Silverlight
#CDays14 – Roma - 23, 24 e 25 Settembre 2014
WP 7.5
Silverlight
WP 8.0
Silverlight
WP 8.1
Silverlight
WP 8.1
WinRT

8. 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
#CDays14 – Roma - 23, 24 e 25 Settembre 2014

9. 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. 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. A Closer Look at What's Available
Direct3D with XAML" C++ application actually creates a C# main
project and a separate Windows Runtime Component in C++.
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12. Sharing C++ code
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13. demo
Sharing C++ code
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14. Recap / Q&A
Welcome back to C++!
#CDays14 – Roma - 23, 24 e 25 Settembre 2014

15. Q&A
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