Source Code : Canvas example snippet: implement tab traversal

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Canvas example snippet: implement tab traversal

 
/******************************************************************************
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * All right reserved. 
 * 
 * Created on Jan 24, 2004 3:03:14 PM by JACK
 * $Id$
 * 
 * visit: http://www.asprise.com/swt
 *****************************************************************************/

/*
 * Canvas example snippet: implement tab traversal (behave like a tab group)
 *
 * 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.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class CanvasExample {
  public static void main(String[] args) {
    Display display = new Display();
    
    Image small = new Image(display, 16, 16);
    GC gc = new GC(small);
    gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
    gc.fillArc(0, 0, 16, 16, 45, 270);
    gc.dispose();
    
    Image large = new Image(display, 32, 32);
    gc = new GC(large);
    gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
    gc.fillArc(0, 0, 32, 32, 45, 270);
    gc.dispose();
    
    /* Provide different resolutions for icons to get
     * high quality rendering wherever the OS needs 
     * large icons. For example, the ALT+TAB window 
     * on certain systems uses a larger icon.
     */
    Shell shell = new Shell(display);
    shell.setText("Small and Large icons");
    shell.setImages(new Image[] {small, large});

    /* No large icon: the OS will scale up the
     * small icon when it needs a large one.
     */
    Shell shell2 = new Shell(display);
    shell2.setText("Small icon");
    shell2.setImage(small);
    
    shell.open();
    shell2.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}



           
         
  

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