title: CFDictionaryCreate analogue of [NSDictionary dictionaryWithObject ... ]
body: <p>I'm looking the way to create following dictionary </p>
  
  <pre><code>    NSDictionary *frameProperties = [NSDictionary dictionaryWithObject:[NSDictionary 
                                                    dictionaryWithObject:[NSNumber numberWithInt:2] 
                                                                  forKey:(NSString *) kCGImagePropertyGIFDelayTime]
                                       forKey:(NSString *) kCGImagePropertyGIFDictionary];
  </code></pre>
  
  <p>By means of CoreFoundation i.e. with <code>CFDictionaryCreate</code></p>
  
  <p>Any Ideas how to implement this ? </p>