And Objective-C is C. A strict superset, in fact.

If

   [aView display];

really, really, really isn't to your liking, you can write

   objc_msgSend( aView, @selector(display)); 

or even:

   objc_msgSend( aView, sel_registerName("display"));

That's pretty much all there is to it. But I have to admit I like the syntax better:

   [aView display];