Cannot change class of UIButton to CheckboxButton in Interface Builder 9.3

[paulw11]

The documentation states that you can change a UIButton to CheckboxButton in Interface Builder, but as of 9.3 this does not seem to be possible.

UIControl is a superclass of UIButton, but Interface Builder does not let you substitute a class that is not a subclass of the object you have placed. Changing CheckboxButton to subclass UIButton resolves this issue.

Otherwise, you must place a UIView in the storyboard scene and change its class to CheckboxButton

[chrisamanse]

You are right, to use in Interface Builder, the view component in the storyboard needs to be UIView, not a UIButton. Thanks for reporting the inaccuracy of the docs, I'll update it