Bug 50340 [Contributions] Large toolbar buttons under Windows XP
200401201132 - enable SWT to use Windows XP widgets (provide java.exe.manifest file; for details see SWT mailing list) - observe: the toolbar buttons are really large !! See attached screen shot
bundles/org.eclipse.jface/src/org/eclipse/jface/action/ActionContributionItem.java
int flags = SWT.PUSH;
			if (action != null) {
				int style = action.getStyle();
				if (style == IAction.AS_CHECK_BOX)
					flags = SWT.CHECK;
				else if (style == IAction.AS_RADIO_BUTTON)
					flags = SWT.RADIO;
				else if (style == IAction.AS_DROP_DOWN_MENU)
					flags = SWT.DROP_DOWN;
			}
			ToolItem ti = null;
			if (index >= 0)
				ti = new ToolItem(parent, flags, index);
			else
				ti = new ToolItem(parent, flags);
			ti.setData(this);
			ti.addListener(SWT.Selection, getToolItemListener());
			ti.addListener(SWT.Dispose, getToolItemListener());
			widget = ti;
			update(null);
			action.addPropertyChangeListener(propertyListener);
		}
	}
	/**
	 * Returns the action associated with this contribution item.
	 *
	 * @return the action
	 */
	public IAction getAction() {
		return action;