Source Code : Label Highlighting

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Label Highlighting

/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Oct 28, 2003 8:10:30 PM by JACK
 * $Id: LabelHighlighting.java,v 1.1 2003/12/22 12:07:54 jackwind Exp $
 * 
 * visit: http://www.asprise.com/swt
 *****************************************************************************/

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;

public class LabelHighlighting {
  Display display = new Display();
  Shell shell = new Shell(display);
  Label label = new Label(shell, SWT.SHADOW_IN | SWT.CENTER);
  Listener listener = new MouseEnterExitListener();
  
  public LabelHighlighting() {
    
    label.setText("Point your cursor here ...");
    label.setBounds(30, 30, 200, 30);
    
    label.addListener(SWT.MouseEnter, listener);
    label.addListener(SWT.MouseExit, listener);
    
    shell.setText("Move your cursor to test ...");
    shell.setSize(260, 120);
    shell.open();    
    
      
    while(! shell.isDisposed()) {
      if(! display.readAndDispatch()) {// If no more entries in event queue
        display.sleep();
      }
    }
    
    display.dispose();
  }
  
  class MouseEnterExitListener implements Listener {
    public void handleEvent(Event e) {
      switch (e.type) {
        case SWT.MouseEnter :
          display.syncExec(new Runnable() {
            public void run() {
              label.setBackground(display.getSystemColor(SWT.COLOR_YELLOW));
              label.setText("Cursor enters the label");
            }
          });
          
          break;

        case SWT.MouseExit :
          display.syncExec(new Runnable() {
            public void run() {
              label.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
              label.setText("Cursor leaves the label");
            }
          });
          
          break;
      }
    }
  }


  public static void main(String[] args) {
    new LabelHighlighting();
  }
}


           
       

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