title: How to recognize a WOL (Wake On Lan) request while the PC is running
body: <p>I wonder if its possible to check if a <code>WOL-request</code> has been<br>
  received <strong>during the computer is already turned on</strong>. <em>(pInvoke, c#?)</em>  </p>
  
  <p><em>If the computer receives a <code>magic paket</code> and boots, <code>Windows</code> writes an corresponding event-log entry to the System-Log.</em></p>
  
  <p>The way i'm looking for is <strong>not to listen to my UDP-Traffic</strong> by my own - if its possible i want to know <strong>how to receive a kind of system event (IRQ?)</strong> or something.. And thats all when receiving PC is already turned on.</p>