With Windows 8.1 also come lots of updates to the tools and templates that you can use to create Windows Store apps. These updates can help cut down the work in your development and test cycles.
Get the updated tools described below at our Windows 8.1 page.
New or updated in Windows 8.1
- General updates
- Diagnostics
- JavaScript editor
- C++ development
- HTML design tools
- XAML design tools
- Windows App Certification Kit 3.0
General updates
Area | Description of update |
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Support for updating your Windows Store apps to Windows 8.1. | Migrate your Windows 8 app to Windows 8.1. This may first require updating your app code for Windows 8.1. |
Windows Store app templates | We’ve updated all templates for Windows 8.1, and we’ve added a new Hub template too. |
Azure Mobile Services and push notification wizards |
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App bundle support | Now you can combine resource packages (like multiple scales, languages, or Microsoft Direct3D feature levels) into a single .appxbundle file for submission to the Windows Store. For your customers, this means that your app is only deployed with the resources they need for their device and locale. |
App validation on a remote device | The Create App Package Wizard in Microsoft Visual Studio 2013 now makes it easy to validate your app using Windows App Certification Kit 3.0 on a remote device (such as Windows RT PCs). |
Create coded UI tests using XAML | Write automated functional tests for testing Windows Store apps using XAML and the cross-hair tool.
Note Touch interactions are now supported for controls. |
New Visual Studio theme/ and Visual Design | We’ve added a third theme, Blue, to the existing Light and Dark themes. The Blue theme offers a mid-range color scheme reminiscent of Microsoft Visual Studio 2010.
Also, based on user feedback, we’ve enhanced all themes with additional color and clarity in icons, revised icons, more contrast across the development environment , and clearer segmentation of regions within the environment. |
Diagnostics
Area | Description of update |
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Mixed-language debugging | For Windows Store apps that use JavaScript and C++, the debugger now lets you set breakpoints in either language and provides a call stack with both JavaScript and C++ functions. |
Managed app debugging | The debugger now displays return values. You can use Edit and Continue in 64-bit managed apps. Exceptions that come from Windows Store apps preserve information about the error, even across language boundaries. |
Asynchronous debugging improvements | The call-stack window now includes the creation stack if you stop in an asynchronous method. |
Native “Just My Code” | For native code, the call stack simplifies debugging by displaying only the code that you’ve created. |
DOM Explorer |
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JavaScript Console | The console now supports object preview and visualization, new APIs, multiline function support, IntelliSense, evaluation of elements as objects or HTML, and legacy document modes. |
JavaScript Memory Profiler |
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JavaScript UI Responsiveness |
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XAML UI Responsiveness | For C#/VB/C++ XAML-based Windows Store apps, the XAML UI Responsiveness tool allows you to diagnose performance issues related to app startup and page navigation, panning and scrolling, and input responsiveness in general. |
JavaScript editor
Area | Description of update |
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Completion of enclosing character pairs | The editor automatically inserts the closing character when you type a left brace (“{“), parenthesis (“(“), bracket (“[“), single quotation mark (“`”), or (“””). A smart auto-format and indent of your source is also made as it auto-completes. |
Editor navigation bar | This new UI feature helps you identify and move through the important elements in your source code. New for JavaScript developers, the navigation bar will highlight important functions and objects in your source. |
Deprecation notes in IntelliSense. | If a Windows API element has been deprecated in Windows 8.1, IntelliSense tooltips identify it as “[deprecated]”. |
Go To Definition for namespaces | You can right-click a namespace you use in your code (such as WinJS.UI) and then click Go To Definition to be taken to the line where that namespace is defined. |
Identifier highlighting | Select an identifier (for example, a variable, parameter, or function name) in your source and any uses of that identifier will be highlighted in your source code. |
C++ development
Area | Description of update |
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Windows Store app development for Windows 8.1 |
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C++11 standard compliance | Compiler support for ISO C++11 language features
Updated Standard Template Library (STL) to use the latest C++11 features Improvements to C99 libraries
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C++ REST SDK | Modern C++ implementation of Representational State Transfer (REST) services. For more info see C++ REST SDK (codename “Casablanca”). |
C++ Azure Mobile Services SDK | The shortest path to a connected C++ app with a Azure backend. |
C++ AMP | SxS CPU/GPU debugging (for WARP accelerator), enhanced texture support (mipmaps and new sampling modes), and improved diagnostics and exceptions. |
IDE productivity features |
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App performance |
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Build-time performance enhancements | Compiler throughput improvements for highly parallel builds. |
HTML design tools
Area | Description of update |
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CSS animation | The timeline editor helps you create CSS animations. |
JavaScript behaviors | Add JavaScript event listeners to any element without writing code. Choose from a list of supplied event handlers or create your own. |
Custom font embedding | Create a branded experience by using custom fonts for HTML text. |
Data binding | Set the data binding for any template. |
Rules and guides | Create custom guides. |
Border radius | Easy-to-use handles on each element help you create rounded corners and ellipses. |
Searching and setting CSS properties | The search box lets you set CSS property values directly and quickly. |
Finding elements with CSS syntax | The live DOM search now supports CSS syntax. For example, you can automatically select all elements with class “myclass” by searching for “.myclass”. |
XAML design tools
Area | Description of update |
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XAML editor improvements | The XAML editor in Visual Studio 2013 includes IntelliSense for data bindings and resources, smart commenting, and Go To Definition. |
Rulers and guides | Create custom guides. |
Better style editing support | Edit styles and templates in the context of the document where they’re used, even if they’re actually defined in another, shared location. |
Sample data support | The data panel enhances sample data support in XAML projects for the Windows Store. This includes the ability to create sample data from JSON content. For an example of how to set this up, see the updated Windows Store app project templates for XAML. |
View state authoring | The device panel in Blend for Microsoft Visual Studio 2013 and Visual Studio 2013 supports updated view states properties and requirements to support variable minimum widths. |
Windows App Certification Kit 3.0
Use the latest version of the Windows App Certification Kit to test the readiness of Windows Store apps for Windows 8 and Windows 8.1 before on-boarding, and for the Windows 7, Windows 8, and Windows 8.1 Windows Desktop App Certification.
We’ve also updated the Windows App Certification Kit to give you a smooth experience. For example, you can now run tests in parallel to save time, and you have more flexibility in selecting the tests you run.
New validation tests
As with previous releases of Windows, we’ve revised the kit content to include more validation, helping to make sure that Windows apps running on the latest update are well behaved. Here’s a high-level breakdown of the new tests.
Test | Description |
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Direct3D additional check | Validates apps for compliance with Direct3D requirements, and ensures that apps using C++ and XAML are calling a new Trim method upon their suspend callback. |
Supported directory structure | Ensures that apps don’t create a structure on disk that results in files longer than MAX_PATH (260 characters). |
File extensions and protocols | Limits the number of file extensions and protocols that an app can register. |
Platform appropriate files | Checks for packages that contain cross-architecture binaries. |
Banned file check | Checks apps for use of outdated or prerelease components known to have security vulnerabilities. |
JavaScript background tasks | Verifies that apps that use JavaScript have the proper close statement in the background task, so the app doesn’t consume battery power unnecessarily. |
Framework dependency rules | Ensures that apps are taking the right framework dependencies for Windows 8 and Windows 8.1. |
Test reports
We’ve made a number of changes to the test report generated by the Windows App Certification Kit. These reports include new information, are easier to read, and provide more links to resources that can help you resolve issues. Significant additions and updates include:
- Expanded error-message details.
- Actionable info for supported and deprecated APIs.
- Details about the configuration of the current test device.
- A language toggle (if the report is localized).
For more information on how to use this kit, see Using the Windows App Certification Kit.