snippet43.java

Eclipse JAVA开发软件中SWT各控件范例源码

/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Caret example snippet: create a caret (using an image)
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet43 {

public static void main (String [] args) {
	Display display = new Display ();
	Shell shell = new Shell (display);
	shell.open ();
	Caret caret = new Caret (shell, SWT.NONE);
	Color white = display.getSystemColor (SWT.COLOR_WHITE);
	Color black = display.getSystemColor (SWT.COLOR_BLACK);
	Image image = new Image (display, 20, 20);
	GC gc = new GC (image);
	gc.setBackground (black);
	gc.fillRectangle (0, 0, 20, 20);
	gc.setForeground (white);
	gc.drawLine (0, 0, 19, 19);
	gc.drawLine (19, 0, 0, 19);
	gc.dispose ();
	caret.setLocation (10, 10);
	caret.setImage (image);
	gc = new GC (shell);
	gc.drawImage (image, 10, 64);
	caret.setVisible (false);
	gc.drawString ("Test", 12, 12);
	caret.setVisible (true);
	gc.dispose ();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ()) display.sleep ();
	}
	image.dispose ();
	display.dispose ();
}
}