code: private void jCheckBoxPaintGradientActionPerformed(java.awt.event.ActionEvent evt)//GEN-FIRST:event_jCheckBoxPaintGradientActionPerformed
      {//GEN-HEADEREND:event_jCheckBoxPaintGradientActionPerformed
          parent.getGraphPanelChart().getChartSettings().setDrawGradient(jCheckBoxPaintGradient.isSelected());
          refreshGraphPreview();
      }
docs: GEN-LAST:event_jComboBoxGranulationActionPerformed