title: Change Display Mode on CTRL-ALT-DEL
body: <p>There seems to be a bit of a quirk with Window's <kbd>Ctrl</kbd>+<kbd>Alt</kbd>+<kbd>Del</kbd>.  When a D3D11 window in exclusive fullscreen mode loses focus via <kbd>Ctrl</kbd>+<kbd>Alt</kbd>+<kbd>Del</kbd>, the desktop retains the display mode used by this window.  If the resolution is too small, using the desktop becomes a bit obtuse.  </p>
  
  <p>I want to make sure that the desktop is returned to its former display mode on <kbd>Ctrl</kbd>+<kbd>Alt</kbd>+<kbd>Del</kbd>, but there's no message for it and I'm not entirely sure how to go about doing that with DXGI.  Is this possible?</p>