addButton
⚠️ Deprecated ⚠️
This is deprecated since version 4.10.
---Adds a button with the given text.
Clicking the button will emit the signal@Gtk.InfoBar::response signal with the given response_id. The button is appended to the end of the info bar's action area. The button widget is returned, but usually you don't need it.
Return
the GtkButton widget that was added
Parameters
buttonText
text of button
responseId
response ID for the button