gtk:info-bar-add-action-widget (infobar child response)

infobar -- a gtk:info-bar widget
child -- an activatable gtk:widget child widget
response -- an integer with the response ID for child

Add an activatable widget to the action area of an info bar, connecting a signal handler that will emit the "response" signal on the message area when the widget is activated. The widget is appended to the end of the message areas action area. The gtk:info-bar implementation is deprecated since 4.10. Do not use it in newly written code.