Bug 313297 XML data set fail in chart data preview
chart/org.eclipse.birt.chart.ui/src/org/eclipse/birt/chart/ui/swt/CustomPreviewTable.java
{
		int iRE = 0;
		for ( int i = 0; i < iIndex; i++ )
		{
			iRE += getColumnWidthFor( i );
		}
		return iRE;
	}
	int getRightEdgeForColumn( int iIndex )
	{
		int iRE = 0;
		for ( int i = 0; i <= iIndex; i++ )
		{
			iRE += getColumnWidthFor( i );
		}
		return iRE;
	}
	int getAdjustedLeftEdgeForColumn( int iIndex )
	{
		int iRE = getLeftEdgeForColumn( iIndex );
		return iRE - iHiddenWidth;
	}