gtk:assistant-use-header-bar (object)

object -- a gtk:assistant widget
setting -- true if the assistant uses a header bar

The accessor for the use-header-bar slot gets or sets whether the assistant uses a header bar for action buttons instead of the action area. For technical reasons, this property is declared as an integer property, use the value 1 for true or -1 for false. The gtk:assistant implementation is deprecated since 4.10. This widget will be removed in GTK 5.