+ _value_widget = new QDoubleSpinBox(parent);
+ _value_widget->setValue(_time);
+ _value_widget->setDecimals(6);
+ _value_widget->setSuffix("s");
+ _value_widget->setSingleStep(1e-6);
+
+ _value_action = new QWidgetAction(parent);
+ _value_action->setDefaultWidget(_value_widget);
+
+ connect(_value_widget, SIGNAL(valueChanged(double)),
+ this, SLOT(on_value_changed(double)));