<map id="Graphical Class Hierarchy" name="Graphical Class Hierarchy">
<area shape="rect" id="node2" href="$class_qwt_null_paint_device.html" title="A null paint device doing nothing. " alt="" coords="159,5,299,32"/>
<area shape="rect" id="node3" href="$class_qwt_graphic.html" title="A paint device for scalable graphics. " alt="" coords="347,5,439,32"/>
</map>
