Synopsis

void                ags_synth_auto_update_callback      (GtkToggleButton *toggle,
                                                         AgsSynth *synth);
void                ags_synth_lower_callback            (GtkSpinButton *spin_button,
                                                         AgsSynth *synth);
void                ags_synth_parent_set_callback       (GtkWidget *widget,
                                                         GtkObject *old_parent,
                                                         AgsSynth *synth);
void                ags_synth_update_callback           (GtkButton *button,
                                                         AgsSynth *synth);