title: how to delete selected rows (multiple rows) from CheckboxTableViewer when button clicks? (table is connected to oracle database)
body: <p>i hava a CheckboxTableViewer which has 10 columns, and the table is filled from database,
  and i have a button outside the table named as "Delete",
  what i want to do is:-
  when i select rows using check box (multiple selection also) and when i press the "delete" button , i want the selected rows should get deleted from the database, and the tableviewer shuold get refreshed.</p>
  
  <p>am pasting my tableviewer code below:-</p>
  
  <pre><code>    final CheckboxTableViewer dataTable = CheckboxTableViewer.newCheckList(TableComposite2, SWT.MULTI | SWT.H_SCROLL   
              | SWT.V_SCROLL | SWT.BORDER |SWT.DM_FILL_BACKGROUND|SWT.FULL_SELECTION);
      dataTable .getTable().setHeaderVisible(true);
      dataTable .getTable().setLinesVisible(true);
      dataTable .setContentProvider(new ArrayContentProvider());
  
  
  //Action Check box
      TableColumn columnCHead=new TableColumn(dataTable .getTable(),SWT.NONE);
      columnCHead.setText("Delete");
      columnCHead.setWidth(50);
      // setting column input
      TableViewerColumn columnC=new TableViewerColumn(dataTable ,columnCHead);
      columnC.setLabelProvider(new ColumnLabelProvider()
      {
          public String getText(Object Element)
          {
  
              return null;
          }
      });
  
      TableColumn columnFS1Head=new TableColumn(dataTable .getTable(),SWT.NONE);
      columnFS1Head.setText("SOURCE DIRECTORY");
      columnFS1Head.setWidth(300);
  
      TableViewerColumn columnFS1=new TableViewerColumn(dataTable ,columnFS1Head);
      columnFS1.setLabelProvider(new ColumnLabelProvider()
      {
          public String getText(Object Element)
          {
              AgedFileMaster a=(AgedFileMaster)Element;
              return a.getDIRECTORY_PATH();
          }
  </code></pre>
  
  <p><code>enter code here</code>});</p>
  
  <p>......
  and i have a button for delete operation,(outside the table),
  when i press delete button, i want the selected rows to get deleted...
  am beginner to SWT.
  anyone please help...... </p>