gtk:label-justify (object)

object -- a gtk:label widget
justify -- a value of the gtk:justification enumeration

The accessor for the justify slot gets or sets the alignment of the lines in the text of the label relative to each other. The :left value is the default value when the widget is first created with the gtk:label-new function. If you instead want to set the alignment of the label as a whole, use the gtk:widget-halign function instead. The (setf gtk:label-justify) function has no effect on labels containing only a single line.