A subclass of UIButton that supports custom application states.
These states are ORed onto the value of the button's state property to provide additional, application-specific states. Images can be assigned to these custom states, for example:
Application state values must only use the bits that are set in the UIControlStateApplication bitmask.
|The button's application state. More...|
The button's application state.
This state is ORed onto the button's existing state.