カスタムビューのXCode表示

@IBDesignable class MyView: UIView {

    @IBInspectable var cornerRadius : CGFloat = 0.0;
    
    
    // Only override draw() if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func draw(_ rect: CGRect) {
        // Drawing code
        self.layer.cornerRadius = cornerRadius
        if cornerRadius > 0 {
            self.clipsToBounds = true;
        }
    }
    

}