Add an activatable widget to the action area of a gtk.info_bar.InfoBar.
This also connects a signal handler that will emit the gtk.info_bar.InfoBar.response signal on the message area when the widget is activated. The widget is appended to the end of the message areas action area.
an activatable widget
response ID for child
Add an activatable widget to the action area of a gtk.info_bar.InfoBar.
This also connects a signal handler that will emit the gtk.info_bar.InfoBar.response signal on the message area when the widget is activated. The widget is appended to the end of the message areas action area.