static const QString Key_View_StickyScrolling;
static const QString Key_View_ShowSamplingPoints;
static const QString Key_View_ShowAnalogMinorGrid;
static const QString Key_View_StickyScrolling;
static const QString Key_View_ShowSamplingPoints;
static const QString Key_View_ShowAnalogMinorGrid;
static void register_change_handler(const QString key,
function<void(QVariant)> cb);
static void register_change_handler(const QString key,
function<void(QVariant)> cb);