Use transparent image to hide Cursor : SWT Cursor « SWT « Java Tutorial






Use transparent image to hide Cursor
/*******************************************************************************
 * 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
 *******************************************************************************/

/* 
 * Cursor snippet: Hide the Cursor over a control.
 *
 * 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.Cursor;
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 CursorHideControl {

  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setBounds(10, 10, 200, 200);
    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);
      }
    });

    // 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() });
    ImageData sourceData = new ImageData(16, 16, 1, palette);
    sourceData.transparentPixel = 0;
    Cursor cursor = new Cursor(display, sourceData, 0, 0);

    shell.open();
    canvas.setCursor(cursor);
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    cursor.dispose();
    display.dispose();
  }
}








17.38.SWT Cursor
17.38.1.Create Cursor from an Image
17.38.2.Create a color cursor from a source and a maskCreate a color cursor from a source and a mask
17.38.3.Create a cursor from a source and a maskCreate a cursor from a source and a mask
17.38.4.Set Cursor to Control
17.38.5.Use transparent image to hide CursorUse transparent image to hide Cursor