[gtkmm] set_value on a Gkt::Scale object, without it emitting a signal_value_changed?

["Ben Jeurissen" <battersea pandora be>]

Is it possible to do a set_value on a Gkt::Scale object, without it emitting
a signal_value_changed? I want the signal_value_changed only to be emitted
when the Scale slider is manipulated by the user, not when a direct call to
set_value() is done. Or is there another signal than signal_value_changed
that is emitted when the user manipulates the Scale slider?

tnx in advance,
battersea