Adds a response with id and label to this.
Responses are represented as buttons in the dialog.
Response ID must be unique. It will be used in [signal@MessageDialog:AdwMessageDialog:response] to tell which response had
been activated, as well as to inspect and modify the response later.
An embedded underline in label indicates a mnemonic.
[[email protected]_response_label] can be used to change the response label after it had been added.
[[email protected]_response_enabled] and [[email protected]_response_appearance] can be used to customize the responses further.
| this |
a message dialog |
| id |
the response ID |
| label |
the response label |