Bug 61313 Platform native icons not used in dialogs
N20040506 For example the 'info' icon for operations in progress, the 'error' icon when an exception occurs, and the 'question' icon when asked to confirm a resource deletion. These used to use the native icons on Windows XP but now they look quite different and non-native. This is a fairly recent regression.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
* @return the number of pixels
	 * @since 2.0
	 */
	public static int convertHeightInCharsToPixels(FontMetrics fontMetrics,
			int chars) {
		return fontMetrics.getHeight() * chars;
	}
	/**
	 * Returns the number of pixels corresponding to the given number of
	 * horizontal dialog units.
	 * <p>
	 * The required <code>FontMetrics</code> parameter may be created in the
	 * following way: <code>
	 * 	GC gc = new GC(control);
	 *	gc.setFont(control.getFont());
	 *	fontMetrics = gc.getFontMetrics();
	 *	gc.dispose();
	 * </code>
	 * </p>
	 * 
	 * @param fontMetrics
	 *            used in performing the conversion
	 * @param dlus
	 *            the number of horizontal dialog units
	 * @return the number of pixels
	 * @since 2.0
	 */
	public static int convertHorizontalDLUsToPixels(FontMetrics fontMetrics,
			int dlus) {