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
* Returns the number of pixels corresponding to the width 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
	 * @return the number of pixels
	 * @since 2.0
	 */
	public static int convertWidthInCharsToPixels(FontMetrics fontMetrics,
			int chars) {
		return fontMetrics.getAverageCharWidth() * chars;
	}
	/**
	 * Shortens the given text <code>textValue</code> so that its width in
	 * pixels does not exceed the width of the given control. Overrides
	 * characters in the center of the original string with an ellipsis ("...")
	 * if necessary. If a <code>null</code> value is given, <code>null</code>
	 * is returned.
	 *