gtk:layout-size (layout)

layout -- a gtk:layout widget
width -- an unsigned integer for the width of the entire scrollable area
height -- an unsigned integer for the height of the entire scrollable area

Accessor of the width and height of the scrollable area. The gtk:layout-size function gets the size in pixels that has been set on the layout, and that determines the total extents of the scrollbar of the layout area. The (setf gtk:layout-size) function sets the size. In the Lisp binding the gtk:layout-width and gtk:layout-height functions get or set the width and height of the scrollable area.