gtk:tree-view-enable-tree-lines (object)

object -- a gtk:tree-view widget
enable -- true, to enable tree line drawing, false otherwise

Accessor of the enable-tree-lines slot of the gtk:tree-view class. The gtk:tree-view-enable-tree-lines function returns whether or not tree lines are drawn in the tree view. The (setf gtk:tree-view-enable-tree-lines) function sets whether to draw lines. This does not have any visible effects for lists.