gtk:widget-layout-manager (object)

object -- a gtk:widget object
manager -- a gtk:layout-manager object

Accessor of the layout-manager slot of the gtk:widget class. The gtk:widget-layout-manager function retrieves the layout manager used by the widget. The (setf gtk:widget-layout-manager) function sets the layout manager delegate instance that provides an implementation for measuring and allocating the children of the widget. Get the layout manager for a button and a grid:

(gtk:widget-layout-manager (make-instance 'gtk:button))
=> #<GTK:BIN-LAYOUT {1005DDB073}>
(gtk:widget-layout-manager (make-instance 'gtk:grid))
=> #<GTK:GRID-LAYOUT {1005DD9863}>