I have a subclass of UIImageView, MySubView, which is instantiated and
added as a subview in the viewDidLoad method of a UIViewController.
MySubView displays a picture without difficulty when its image
property is set in its initWithFrame method. But its drawRect method
is never called. (I put an NSLog call inside it to check.) I've tried
sending MySubView setNeedsDisplay messages from all kinds of places,
to no avail.
I suspect I'm missing something very simple. Any advice would be
appreciated.
