set_justify
Description:
Sets the alignment of lines in the label relative to each other.
This function has no effect on labels containing only a single line.
[enum@Gtk.Justification.left] is the default value when the widget is first created with [ctor@Gtk.Label.new].
If you instead want to set the alignment of the label as a whole, use [method@Gtk.Widget.set_halign] instead.
Parameters:
| this |
a label |
| jtype |
the new justification |