Radio

xib-based

Adding Radio Button control to xib interface, change control custom class to component class name of your exported.

code-based

Declare lazy load variable in the controller class and add it to the view.

import Cocoa
class ViewController: NSViewController {
    lazy var radio: HDRadio = {
        let radio = HDRadio(frame: NSRect(x: 100, y: 100, width: 80, height: 32))
        return radio
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.addSubview(radio)
    }
    
}