gtk:overlay-measure-overlay (overlay widget)

overlay -- a gtk:overlay widget
widget -- a gtk:widget overlay widget
measure -- a boolean whether the overlay widget should be measured

The gtk:overlay-measure-overlay function gets whether the size of the overlay widget is included in the measurement of the overlay. The (setf gtk:overlay-measure-overlay) function sets the property.

The overlay will request the size of the largest overlay widget that has this property set to true. Children who are not included may be drawn outside of the allocation of the overlay if they are too large.