Extensions (package schema for Windows 8, child of Application)

Article
2021-09-20

Defines one or more extensibility points for the app.

Element hierarchy

<Application>: <Extensions>

Syntax

<Extensions>

  <!-- Child elements -->
  Extension{1,10000}

</Extensions>

Key

{} specific range of occurrences

Attributes and Elements

Attributes

None.

Child Elements

Child Element	Description
Extension (in type: CT_ApplicationExtensions)	Declares an extensibility point for the app.

Parent Elements

Parent Element	Description
Application	Represents an app that comprises part of or all of the functionality delivered in the package.

The following elements have the same name as this one, but different content or attributes:

Extensions (type: CT_PackageExtensions)

Remarks

Extensibility points are a mechanism by which an app can add functionality in a manner defined by the operating system. An example of an app extensibility point is the ability to create a file type association and enable your app to be the default handler for files with a specific file name extension.

Examples

The following example is taken from the package manifest of one of the SDK samples.

<Applications>
  <Application Id="App" StartPage="default.html">
    <VisualElements DisplayName="Assocation launching sample" 
         Logo="images\squareTile-sdk.png" SmallLogo="images\smallTile-sdk.png" 
         Description="SDK sample" 
         ForegroundText="dark" BackgroundColor="#FFFFFF" ToastCapable="false">
      <DefaultTile ShowName="allLogos" />
      <SplashScreen BackgroundColor="white" Image="images\splash-sdk.png" />
    </VisualElements>
    <Extensions>
      <Extension Category="windows.fileTypeAssociation">
        <FileTypeAssociation Name=".alsdkjs">
          <SupportedFileTypes>
            <FileType>.alsdkjs</FileType>
          </SupportedFileTypes>
        </FileTypeAssociation>
      </Extension>
      <Extension Category="windows.protocol">
        <Protocol Name="alsdkjs" />
      </Extension>
    </Extensions>
  </Application>
</Applications>

Requirements

	Value
Namespace	`http://schemas.microsoft.com/appx/2010/manifest`

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