gtkRangeSetFillLevel(object, fill.level)
object
GtkRange
fill.level
gtkRangeSetShowFillLevel
. The range defaults
to not showing the fill level.
Additionally, it's possible to restrict the range's slider position
to values which are smaller than the fill level. This is controller
by gtkRangeSetRestrictToFillLevel
and is by default
enabled.
Since 2.12