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
/**
	 * Get the default font for this type of control.
	 * 
	 * @param control
	 * @return
	 */
	private static Font getDefaultFont(Control control) {
		String fontName = "DEFAULT_FONT_" + control.getClass().getName(); 
		if (JFaceResources.getFontRegistry().hasValueFor(fontName))
			return JFaceResources.getFontRegistry().get(fontName);
		Font cached = control.getFont();
		control.setFont(null);
		Font defaultFont = control.getFont();
		control.setFont(cached);
		JFaceResources.getFontRegistry().put(fontName,
				defaultFont.getFontData());
		return defaultFont;
	}
	/**
	 * Return whether or not the dialog font is currently the same as the
	 * default font.
	 * 
	 * @return boolean if the two are the same
	 */
	protected static boolean dialogFontIsDefault() {
		FontData[] dialogFontData = JFaceResources.getFontRegistry()
				.getFontData(JFaceResources.DIALOG_FONT);
		FontData[] defaultFontData = JFaceResources.getFontRegistry()
				.getFontData(JFaceResources.DEFAULT_FONT);
		return Arrays.equals(dialogFontData, defaultFontData);