This demo shows how to bring back the Windows screen so that you can
  process dialogs if you need. This demo captures the screen resolution
  and when the user presses 's' the DirectDraw screen will minimize and
  Windows will be brought back. At this point, you can show any Forms that
  you may need to gather info from the user, ie. connection information for
  DirectPlay games, capture exception errors, etc.

  Once the player is ready to return back to the game, the DirectDraw screen
  is shown and the game continues. Note: You must turn page flipping off
  before going back to Windows and you can turn it back on when you return
  back to your game. Also, you should redraw the game screen before
  continuing the game.