Mega Code Archive
Create Transparent Color
<![CDATA[
/*******************************************************************************
* Copyright (c) 2000, 2006 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
*******************************************************************************/
/*
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.PaletteData;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ColorTransparentCreate {
public static void main(String[] args) {
final Display display = new Display();
Shell shell = new Shell(display);
shell.setBounds(10, 10, 200, 200);
// create a cursor with a transparent image
Color white = display.getSystemColor(SWT.COLOR_WHITE);
Color black = display.getSystemColor(SWT.COLOR_BLACK);
PaletteData palette = new PaletteData(new RGB[] { white.getRGB(), black.getRGB() });
final ImageData sourceData = new ImageData(30, 30, 1, palette);
sourceData.transparentPixel = 0;
Canvas canvas = new Canvas(shell, SWT.BORDER);
canvas.setBounds(10, 50, 150, 100);
canvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
e.gc.drawString("hide Cursor here", 10, 10);
e.gc.drawImage(new Image(display, sourceData), 0, 0);
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
]]>