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
private HashMap buttons = new HashMap();
	/**
	 * Font metrics to use for determining pixel sizes.
	 */
	private FontMetrics fontMetrics;
	/**
	 * Number of horizontal dialog units per character, value <code>4</code>.
	 */
	private static final int HORIZONTAL_DIALOG_UNIT_PER_CHAR = 4;
	/**
	 * Number of vertical dialog units per character, value <code>8</code>.
	 */
	private static final int VERTICAL_DIALOG_UNITS_PER_CHAR = 8;
	/**
	 * Returns the number of pixels corresponding to the height of the given
	 * number of characters.
	 * <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 chars
	 *            the number of characters