title: How do I add Apple's iAds to my OpenGL based iPhone app?
body: <p>I'd like to generate some revenue for my OpenGL based iPhone app w/ Apple's iAds.  Everything in the app is done w/ OpenGL including menus, buttons etc.  <strong>How do I add iAds to my app?</strong></p>
  
  <p><strong>More info</strong>:  I've looked over sample code from Apple and I'm still stuck. Just fyi I currently don't use any view controllers.  All I have is a "Window".  I tried adding the bannerView to the window with the addSubView method but it just crashes the app.  For some reason this works fine with the MailComposerView.  Any help is appreciated!</p>
  
  <p><strong>More info</strong>:  I created a subclass of UIViewController and put a BannerAd on it.  Now the test advertisements show up.  <strong>How do I make the rest of the UIView transparent such that the ads show up (with an alpha of 1.0) and I can also click on my buttons being created w/ OpenGL on the window below the UIViewController</strong>?</p>