Bug 219874 Exploit Vista progress bars
We should exploit the Vista coloured progress bars
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/ProgressMonitorDialog.java
*/
	private void update() {
		if (messageLabel == null || messageLabel.isDisposed()) {
			return;
		}
		messageLabel.update();
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.window.Window#open()
	 */
	public int open() {
		
		if (!getOpenOnRun()) {
			if (getNestingDepth() == 0) {
				return OK;
			}
		}
		int result = super.open();
		
		
		if (task == null || task.length() == 0)
			setMessage(DEFAULT_TASKNAME, true);
		else
			setMessage(task, true);
		return result;
	}
}