gtk:layout-manager, gobject:object, common-lisp:standard-object, common-lisp:t

None

The gtk:custom-layout class is a convenience type meant to be used as a transition mechanism between gtk:widget objects implementing a layout policy, and gtk:layout-manager classes.

A gtk:custom-layout object uses closures matching to the old gtk:widget virtual functions for size negotiation, as a convenience API to ease the porting towards the corresponding gtk:layout-manager virtual functions.