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
* (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#postStartup()
	 */
	public void postStartup() {
		try {
			refreshFromLocal();
			activateProxyService();
			checkUpdates();
			((Workbench) PlatformUI.getWorkbench()).registerService(
					ISelectionConversionService.class,
					new IDESelectionConversionService());
			initializeSettingsChangeListener();
			Display.getCurrent().addListener(SWT.Settings,
					settingsChangeListener);
		} finally {
			Platform.getJobManager().resume();
		}
	}
	/**
	 * Activate the proxy service by obtaining it.
	 */
	private void activateProxyService() {
		Bundle bundle = Platform.getBundle("org.eclipse.ui.ide"); 
		Object proxyService = null;
		if (bundle != null) {
			ServiceReference ref = bundle.getBundleContext().getServiceReference(IProxyService.class.getName());
			if (ref != null)
				proxyService = bundle.getBundleContext().getService(ref);
		}