gtk:application-active-window (object)

object -- a gtk:application instance
window -- a gtk:window widget

Accessor of the active-window slot of the gtk:application class. The gtk:application-active-window function gets the active window for the application. The active window is the one that was most recently focused within the application. This window may not have the focus at the moment if another application has it - this is just the most recently focused window within this application.