Thoughts about setup and deployment issues, WiX, XNA, the .NET Framework and Visual Studio
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A while back, I posted an item on the Media Center Sandbox blog that described how to directly launch Windows Media Center and have it navigate to a specific experience using some command line parameters available within the Windows Media Center Shell application. Since then, several folks have asked me about those command line parameters and whether there were more.
The specific problem that most people noted was that the command line ehshell.exe /directmedia:tv navigates to the Recorded TV gallery and not to Live TV. Unfortunately, there is not a command line parameter that allows direct navigation to Live TV.
However, there is another mechanism that can be used to launch Windows Media Center and browse to a specific experience, including Live TV. I'm going to describe the algorithm in words here:
WPARAM values to use for browsing
LPARAM values to use for browsing
This algorithm works regardless of whether the Windows Media Center UI is currently running. It also correctly handles bringing the Windows Media Center UI to the foreground. This is the only officially supported method of browsing to the Windows Media Center UI from an external application. This mechanism was first made available in Windows XP Media Center Edition 2004.
New values might be added to the WPARAM and LPARAM tables with new versions of Windows Media Center.
I've also created a sample Win32 application that implements the above algorithm. You can find more information about that sample application and download the source code and the executable from this blog post.
<update date="1/14/2009"> Added a link to the sample application that I created to demonstrate how to implement this algorithm. </update>
Wow, this is great. Thanks for sharing. How is WPARAM 13 used? I am assuming that somehow you should be able to pass an entry point guid to tell Media Center which extensibility application you want to launch?
Hi Anpark - WPARAM 13 can be used to launch the first application registered in the "OEM Extensibility 1" category. To accomplish this when registering an application, you should include the following string in the registration XML file:
<category category="OEM Extensibility 1"/>
Question: I saw your previous post describing an algorithm for launching Windows Media Center and automatically
A couple of weeks ago, I posted a description of an algorithm that can be used to launch Windows Media
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