Detect a system settings change : WIN32 « SWT « Java Tutorial

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Java Tutorial » SWT » WIN32 




Detect a system settings change
/*******************************************************************************
 * 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
 *******************************************************************************/

/* 
 * example snippet: detect a system settings change
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 
 * @since 3.2
 */

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
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;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

public class DetectSystemSettingChange {

  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("The SWT.Settings Event");
    shell.setLayout(new GridLayout());
    Label label = new Label(shell, SWT.WRAP);
    label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
    label.setText("Change a system setting and the table below will be updated.");
    final Table table = new Table(shell, SWT.BORDER);
    table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    TableColumn column = new TableColumn(table, SWT.NONE);
    column = new TableColumn(table, SWT.NONE);
    column.setWidth(150);
    column = new TableColumn(table, SWT.NONE);
    for (int i = 0; i < colorIds.length; i++) {
      TableItem item = new TableItem(table, SWT.NONE);
      Color color = display.getSystemColor(colorIds[i]);
      item.setText(0, colorNames[i]);
      item.setBackground(1, color);
      item.setText(2, color.toString());
    }
    TableColumn[] columns = table.getColumns();
    columns[0].pack();
    columns[2].pack();
    display.addListener(SWT.Settings, new Listener() {
      public void handleEvent(Event event) {
        for (int i = 0; i < colorIds.length; i++) {
          Color color = display.getSystemColor(colorIds[i]);
          TableItem item = table.getItem(i);
          item.setBackground(1, color);
        }
        TableColumn[] columns = table.getColumns();
        columns[0].pack();
        columns[2].pack();
      }
    });

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

  static int[] colorIds = new int[] { SWT.COLOR_INFO_BACKGROUND, SWT.COLOR_INFO_FOREGROUND,
      SWT.COLOR_LIST_BACKGROUND, SWT.COLOR_LIST_FOREGROUND, SWT.COLOR_LIST_SELECTION,
      SWT.COLOR_LIST_SELECTION_TEXT, SWT.COLOR_TITLE_BACKGROUND,
      SWT.COLOR_TITLE_BACKGROUND_GRADIENT, SWT.COLOR_TITLE_FOREGROUND,
      SWT.COLOR_TITLE_INACTIVE_BACKGROUND, SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT,
      SWT.COLOR_TITLE_INACTIVE_FOREGROUND, SWT.COLOR_WIDGET_BACKGROUND, SWT.COLOR_WIDGET_BORDER,
      SWT.COLOR_WIDGET_DARK_SHADOW, SWT.COLOR_WIDGET_FOREGROUND, SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW,
      SWT.COLOR_WIDGET_LIGHT_SHADOW, SWT.COLOR_WIDGET_NORMAL_SHADOW, };

  static String[] colorNames = new String[] { "SWT.COLOR_INFO_BACKGROUND",
      "SWT.COLOR_INFO_FOREGROUND""SWT.COLOR_LIST_BACKGROUND""SWT.COLOR_LIST_FOREGROUND",
      "SWT.COLOR_LIST_SELECTION""SWT.COLOR_LIST_SELECTION_TEXT""SWT.COLOR_TITLE_BACKGROUND",
      "SWT.COLOR_TITLE_BACKGROUND_GRADIENT""SWT.COLOR_TITLE_FOREGROUND",
      "SWT.COLOR_TITLE_INACTIVE_BACKGROUND""SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT",
      "SWT.COLOR_TITLE_INACTIVE_FOREGROUND""SWT.COLOR_WIDGET_BACKGROUND",
      "SWT.COLOR_WIDGET_BORDER""SWT.COLOR_WIDGET_DARK_SHADOW""SWT.COLOR_WIDGET_FOREGROUND",
      "SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW""SWT.COLOR_WIDGET_LIGHT_SHADOW",
      "SWT.COLOR_WIDGET_NORMAL_SHADOW"};
}














17.127.WIN32
17.127.1.Using System Icon ImageUsing System Icon Image
17.127.2.Invoke the system text editor on autoexec.bat
17.127.3.Invoke an external batch file
17.127.4.Load System File IconLoad System File Icon
17.127.5.Embed Word in an applet (win32 only)
17.127.6.OLE and ActiveX: browse the typelibinfo for a program id (win32 only)
17.127.7.OLE and ActiveX: get events from IE control (win32 only)OLE and ActiveX: get events from IE control (win32 only)
17.127.8.How to access About, Preferences and Quit menus on carbon.
17.127.9.Add System Setting Change Listener
17.127.10.Detect a system settings changeDetect a system settings change
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