super( parent, style );
	DialChartViewer( )	{		final PluginSettings ps = PluginSettings.instance( );		try		{			idr = ps.getDevice( "dv.SWT" );//$NON-NLS-1$		}		catch ( ChartException pex )		{			logger.log( pex );		}		cm = PrimitiveCharts.createSDialMRegionChart( );	}