Gets the PangoLayout used to display the scale.
The returned object is owned by the scale so does not need to be freed by the caller.
the [class@Pango.Layout] for this scale, or %NULL if the [property@GtkScale:draw-value] property is %FALSE.
See Implementation
Gets the PangoLayout used to display the scale.
The returned object is owned by the scale so does not need to be freed by the caller.