Method setBackgroundFillColor

src/gui/SpectrumWidget.cpp:7342–7350

}

void SpectrumWidget::setBackgroundFillColor(const QColor& c)
{
    if (!c.isValid() || c == m_bgFillColor) return;
    m_bgFillColor = c;
    auto& s = AppSettings::instance();
    s.setValue(settingsKey("BackgroundFillColor"), m_bgFillColor.name());
    s.save();
    markOverlayDirty();
}

bool SpectrumWidget::event(QEvent* ev)
{