Use the Microsoft Lync 2010 SDK to display an application in the Extensibility window during Microsoft Lync 2010 conversations.
Displaying an Application in the Extensibility Window
Only Web applications are supported. Microsoft Silverlight applications must be embedded in an HTML page. Displaying an application in the Extensibility window requires the following steps.
Install the application.
Register the application by adding registry entries. For more information, see Registering Contextual Conversation Packages .
Use Lync SDK to start the conversation. For an example, see the code in Walkthrough: Perform Run-Time Registration for an Extensibility Application .
Also consider using custom commands embedded in the Lync 2010 UI to launch applications on the Windows desktop. For more information, see Adding Custom Commands to Lync Menus .