Method setLowerPosition

src/frontend/widgets/qxtspanslider.cpp:504–516

}

void QxtSpanSlider::setLowerPosition(int lower) {
	if (qxt_d().lowerPos != lower) {
		qxt_d().lowerPos = lower;
		if (!hasTracking())
			update();
		if (isSliderDown())
			Q_EMIT lowerPositionChanged(lower);
		if (hasTracking() && !qxt_d().blockTracking) {
			bool main = (qxt_d().mainControl == QxtSpanSlider::LowerHandle);
			qxt_d().triggerAction(SliderMove, main);
		}
	}
}

/*!
	\property QxtSpanSlider::upperPosition