[ CCode ( has_construct_function = false ) ]
public Message.state_changed (Object? src, State oldstate, State newstate, State pending)
Create a state change message.
This message is posted whenever an element changed its state.
| src |
The object originating the message. |
| oldstate |
the previous state |
| newstate |
the new (current) state |
| pending |
the pending (target) state |