Shadows on figures

Hi,

Why is it not possible to make "buttonss (figures) with shadows. We think that figures (rectangles) work best as buttons but we are not able to make shadows on figures as this is only possible with text boxes and pictures. As a workaround we have to add a picture behind the figure and add shadow to that picture?

Is there no easier way, or could it be programmed so it is possible to add shadows on figures?shadows.jpg