Use popular styles and behaviors as used in Windows Live or Outlook 

Setting the Style property lets you instantly obtain the default appearance and behavior of desktop alert windows for Windows Live Messenger or Outlook styles.
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The desktop alert window can slide into view from any of eight different directions, and with complete control over its opacity you can have it slowly materialize and then fade away.
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Slide your desktop alert window into view from any of 8 directions. 
Add hyperlinked text to your desktop alert message. 

We reuse the FormattedTextUIElement from the PLF™ which allows for richly formatted text that can serve as a hyperlink.
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Add alert buttons to a tool bar within the desktop alert window that can be associated with application-specific functions.
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Add one or more buttons to appear on bottom edge of the desktop alert window. 
Play a .WAV sound file when a desktop alert window appears. 

Play .WAV Sound Files

Associate any .WAV sound clip with the desktop alert window that will play when the alert appears.