gtk:widget, gobject:initially-unowned, gtk:accessible, gtk:buildable, gtk:constraint-target, gtk:scrollable, gobject:object, common-lisp:standard-object, common-lisp:t

None

The gtk:viewport widget acts as an adaptor class, implementing scrollability for child widgets that lack their own scrolling capabilities. Use the gtk:viewport widget to scroll child widgets such as the widgets gtk:grid, gtk:box, and so on.

The gtk:viewport widget will start scrolling content only if allocated less than the minimum size of the child widget in a given orientation. The gtk:viewport widget has a single CSS node with name viewport. The gtk:viewport implementation uses the :group role of the gtk:accessible-role enumeration.