Defines the interface through which the Handler notifies subscribers about Handler state change events. More...
Public Member Functions | |
| HandlerStateChange (HandlerState newState, HandlerState oldState) | |
| Initialize intance. | |
| HandlerState | newState () const |
| New State. | |
| HandlerState | oldState () const |
| Old state. | |
| std::string | toString () const |
| String representation. | |
| void | toString (std::string &) const |
| Appends string representation. | |