title: What does Internet Explorer do to notify other browsers about proxy settings change?
body: <p>I've come to a strange behaviour, if I change proxy settings on Windows 7 in </p>
  
  <pre><code>HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
  </code></pre>
  
  <p>Google Chrome acts like nothing happened - even after restarting it. However when I start/restart Internet Explorer, somehow it "tells" Chrome about the changes and suddenly Chrome starts to use the proxy settings - even without restarting Chrome.</p>
  
  <p>What does Internet Explorer "do" so Chrome notices that?</p>
  
  <p>Is something similar, something that IE Explorer do, achieveable in C++ ?</p>
  
  <p><em>PS: <code>RegNotifyChangeKeyValue</code> does not seem to be the thing...</em></p>