title: How can I change a window orientation to landscape in XCode 4 Interface Builder?
body: <p>I appreciate I'm probably missing something basic here, but...</p>
  
  <p>My iPad app will only support landscape mode, and has a MainWindow.xib Window that I'd like to work on in landscape mode in XCode 4, however the pull-down menu to change this (Simulated Metrics -> Orientation) is always grayed out.</p>
  
  <p>I notice that Views can be rotated just fine, it's only Windows that can't be rotated in XCode 4 using this setting.</p>
  
  <p>Is there a workaround for this, or do I have to put a View on top of the MainWindow in order to rotate it?</p>