To dream of a store window represents feelings about possible goals or desires being within reach. Seeing what you want in life , but feeling held back by some minor obstacle. Awareness of yourself being able to achieve something if certain action was taken or certain opportunities presented themselves.
Negatively, a store window may reflect feelings about being purposely kept away from a goal or desire. Feeling forced to "taste" your goals without ever getting to realize them. It may also represent a fear of taking action to achieve your goals and choosing to live with jealous desire. Alternatively, it may reflect excessive "window shopping" with life goals and not enough action. Too much talking about doing something without being serious about it. Not choosing to do something because you keep hoping for something to happen in the future.
To dream of breaking a store window may reflect life situations where you are choosing to take what you want by unconventional means. Frustration with having to be patient or achieve a goal the honest way. Alternatively, breaking a store window may reflect embarrassing people who flaunt your weakness to your face by stealing their power away (beating them up, cheating behind their backs, or humiliating them by just pushing them aside).
Example: A man dreamed of robbing a store by breaking the windows and taking what he wanted. In waking life he secretly worked behind the scenes to rip off an arrogant business partner who ignorantly took his money and bragged to his face about having to wait years to get it back. Breaking the store window represented the dreamer "shattering" his feelings of jealous desire once and for all by unexpectedly humiliating his business partner with legal problems and taking all his money back.
Example 2: A woman dreamed of walking past a number of store window displays that she felt each represented one of her clients. In the dream she told herself that each display should have different colors and lighting to reflect the personality of the client. In waking life she was an interior designer focused on making designs for her clients that were original and tailored to the clients tastes.