+ on_pixmap = QPixmap(width(), height());
+ QPainter on_painter(&on_pixmap);
+ draw_vu_meter(on_painter, -HUGE_VAL, HUGE_VAL, width(), height(), 0);
+
+ off_pixmap = QPixmap(width(), height());
+ QPainter off_painter(&off_pixmap);
+ draw_vu_meter(off_painter, -HUGE_VAL, -HUGE_VAL, width(), height(), 0);