Source Code : Prevent Tab from traversing out of a control

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Prevent Tab from traversing out of a control

/*
 * Control example snippet: prevent Tab from traversing out of a control
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.TraverseEvent;
import org.eclipse.swt.events.TraverseListener;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class Snippet127 {
public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  Button button1 = new Button(shell, SWT.PUSH);
  button1.setBounds(10,10,80,30);
  button1.setText("no traverse");
  button1.addTraverseListener(new TraverseListener () {
    public void keyTraversed(TraverseEvent e) {
      switch (e.detail) {
        case SWT.TRAVERSE_TAB_NEXT:
        case SWT.TRAVERSE_TAB_PREVIOUS: {
          e.doit = false;
        }
      }
    }
  });
  Button button2 = new Button (shell, SWT.PUSH);
  button2.setBounds(100,10,80,30);
  button2.setText("can traverse");
  shell.pack ();
  shell.open();
  while (!shell.isDisposed ()) {
    if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}
}


           
       

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