How to keep the display on during audio/video playback

 Michael-R-Albertin  09.03.2013  c#, WinRT / Windows Store  ,
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How to keep the display on during audio/video playback 

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// Create this variable at a global scope. Set it to null.
private DisplayRequest dispRequest = null;
 
public void StartVideoPlayback()
{
    if (dispRequest == null)
    {
        // Activate a display-required request. If successful, the screen is
        // guaranteed not to turn off automatically due to user inactivity.
        dispRequest = new DisplayRequest();
        dispRequest.RequestActive();
         
        rootPage.NotifyUser("Display request activated",
                        NotifyType.StatusMessage);
         
        // Insert your own code here to start the video.
     }
}
 
public void StopVideoPlayback()
{
    // Insert your own code here to stop the video.
    if (dispRequest != null)
    {
        // Deactivate the display request and set the var to null.
        dispRequest.RequestRelease();
        dispRequest = null;
         
        rootPage.NotifyUser("Display request released",
                            NotifyType.StatusMessage);
    }
}

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