Java Tutorial/SWT/Spinner Event

Add Selection Listener to Spinner

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Spinner; public class SpinnerSelectionListener {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setText("Spinner with float values");
   shell.setLayout(new GridLayout());
   final Spinner spinner = new Spinner(shell, SWT.NONE);
   // allow 3 decimal places
   spinner.setDigits(3);
   // set the minimum value to 0.001
   spinner.setMinimum(1);
   // set the maximum value to 20
   spinner.setMaximum(20000);
   // set the increment value to 0.010
   spinner.setIncrement(10);
   // set the seletion to 3.456
   spinner.setSelection(3456);
   
   spinner.addSelectionListener(new SelectionAdapter() {
     public void widgetSelected(SelectionEvent e) {
       int selection = spinner.getSelection();
       int digits = spinner.getDigits();
       System.out.println("Selection is " + (selection / Math.pow(10, digits)));
     }
   });
   
   
   shell.setSize(200, 200);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

}</source>