How do you create a custom themed NSButton?
cocoa
Solution
Actually, you need to subclass `NSButtonCell`. You should read Apple's documentation on this to gain a better understanding of how they interact. You probably will still want to subclass `NSButton` so that it will use your `NSButtonCell` subclass, too.
For a button, most of the work is done in `drawBezelWithFrame:inView:`. If you want to alter the way the text or image is drawn, you would override `drawTitle:withFrame:inView:` and `drawImage:withFrame:inView:`.
Problem
How do you create a custom themed NSButton? I don't mean in a small way like changing the background color or changing from rounded edges to square edges. I want to replace the entire look and feel of the button. Is that even possible to do in Cocoa? Obviously I would have to subclass the NSButton class and go from there. Any help would be much appreciated.