public void addColumn(Class classType,boolean readOnly,String header){
  m_modelHeaderClass.add(classType);
  setColumnReadOnly(m_modelHeaderClass.size() - 1,readOnly);
  addColumn(header);
  WListItemRenderer renderer=(WListItemRenderer)getItemRenderer();
  renderer.setColumnClass((renderer.getNoColumns() - 1),classType);
  return;
}

public void addColumn ( Class classType , boolean readOnly , String header ) { m_modelHeaderClass . add ( classType ) ; setColumnReadOnly ( m_modelHeaderClass . size ( ) - 1 , readOnly ) ; addColumn ( header ) ; WListItemRenderer renderer = ( WListItemRenderer ) getItemRenderer ( ) ; renderer . setColumnClass ( ( renderer . getNoColumns ( ) - 1 ) , classType ) ; return ; }
set the attributes of the column .
