Bug 153933 [Dialogs] [RCP] Dialog.DLG_IMG_HELP not available in RCP apps
bundles/org.eclipse.ui.ide.application/src/org/eclipse/ui/internal/ide/application/IDEWorkbenchAdvisor.java
if (proxyService == null) {
			IDEWorkbenchPlugin.log("Proxy service could not be found."); 
		}	
	}
	/**
	 * Initialize the listener for settings changes.
	 */
	private void initializeSettingsChangeListener() {
		settingsChangeListener = new Listener() {
			boolean currentHighContrast = Display.getCurrent()
					.getHighContrast();
			public void handleEvent(org.eclipse.swt.widgets.Event event) {
				if (Display.getCurrent().getHighContrast() == currentHighContrast)
					return;
				currentHighContrast = !currentHighContrast;
				
				if (new MessageDialog(null,
						IDEWorkbenchMessages.SystemSettingsChange_title, null,
						IDEWorkbenchMessages.SystemSettingsChange_message,
						MessageDialog.QUESTION, new String[] {
								IDEWorkbenchMessages.SystemSettingsChange_yes,
								IDEWorkbenchMessages.SystemSettingsChange_no },
						1).open() == Window.OK) {
					PlatformUI.getWorkbench().restart();
				}
			}
		};
	}
	/*
	 * (non-Javadoc)