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Win rt fundamentals
- 1. Kevin Stumpf Sr Software Engineer kstumpf@interknowlogy.com
- 2. 1. Short introduction to Windows 8 2. Windows Runtime (WinRT) 3. Ways to develop Metro style apps for Windows 8 4. Language Projection 5. .NET’s role in the WinRT world 6. XAML Differences to WPF 7. Limitations
- 3. Important facts about Windows 8
- 4. 1. Hybrid OS 2. Contracts 3. Security System
- 5. App exposes publishes Capabilities restricts Marketplace Broker Network (Client/Server) Shared Directories Hardware • Documents • Webcam • Videos • Microphone • Pictures • Proximity • Music • GPS
- 6. 1. Knowledge applies to Desktop, Tablet & WP8 2. The future is handheld 1. Consumer Market 2. Corporate Market (Hotel Check-Ins, Nurses, etc.) 3. Develop commercial Apps for the Marketplace 4. Strong Marketing from Microsoft as their Metro Ecosystem is vital
- 7. What the WinRT is about and how it is integrated in the Win32 world
- 8. 1. Windows 8 Architecture 2. WinRT vs. Win32 3. WinRT API
- 11. asynchronous object oriented private based on extended COM Hierarchical self-explanatory namespaces
- 12. Ways to develop Metro style apps for Windows 8
- 13. 1. Dependency Diagram 2. Metro style GUI development 1. XAML 2. “HTML5”/CSS 3. Business Logic development 1. JavaScript 2. C# / VB 3. C++
- 14. CX WRL
- 15. How C#, JavaScript and C++ can access the very same WinRT API
- 16. 1. WinRT API Metadata 2. Projection explanation 3. Projection areas
- 17. WinRT API is described by .winmd Files Only Metadata, no implementation Foundation for the Language Projection Format follows ECMA-335 standard (Common Language Infrastructure) Independent from .NET, although it shares the same file format Files can be disassembled using IL Location: C:WindowsSystem32WinMetadata
- 18. WinRT API (Metadata) Type Projections Naming Projections Pattern Projections
- 19. .NET’s role in the WinRT world
- 20. 1. Integration in WinRT 2. Metro style subset 3. Visual Studio Project types
- 21. C#/VB is NOT compiled against WinRT, it is still compiled to the same MSIL and then JIT- compiled at runtime by the CLR Executing CLR is the same for Desktop and Metro style based apps Desktop and Metro style both use .NET 4.5 Metro style uses a constrained .NET subset which is just another .NET Profile (similar to Silverlight, WP7) Metro style apps in addition reference the WinRT by referencing Windows.winmd CLR communicates with WinRT A .NET developer's view of Windows 8 app development
- 22. Subset restricts functionality at development time that would be forbidden by the application container at runtime Certain functionality was moved to the WinRT API (File access, network) to avoid redundancy Certain functionality was completely removed ◦ Dangerous/ Obsolete / Legacy APIs ◦ Badly designed APIs ◦ Not applicable anymore (Console, ASP.NET) Refactorings
- 23. No exceptions with a full stack trace anymore! Instead, HRESULTS and wild guessing Debugging is limited: No reflection of the framework’s implementation is possible anymore
- 24. Major changes between WPF XAML and WinRT XAML
- 26. No MultiBindings No RadialGradient Brushes No PixelShader effects for UIElements No RelativeSource->FindAncestor Bindings No Implicit DataTemplates No Triggers, just VSM No Markup Extensions
- 27. WinRT Limitations and how you can overcome some of them
- 28. WinRT API only addresses the most common use cases A subset of COM and Win32 functionality is available to address other scenarios such as ◦ Accessing raw data from the webcam ◦ DirectX ◦ Diagnostics ◦ …
- 29. .NET World: Pinvoke C++: Import the Win32 library and invoke the imported method JavaScript: No winmd metadata available => Not callable from JavaScript. Workaround: Build a C++ or .NET WinRT component that wraps the C++/COM functionality of interest
- 30. Kevin Stumpf – kstumpf@interknowlogy.com