GtkAdjustment with the GtkProgress. A GtkAdjustment
is used to represent the upper and lower bounds and the step interval
of the underlying value for which progress is shown.
WARNING: gtk_progress_set_adjustment is deprecated and should not be used in newly-written code.
gtkProgressSetAdjustment(object, adjustment)objectGtkProgress.adjustmentGtkAdjustment to be associated with the GtkProgress.