Creates an instance of SmallButton.
Returns true if left side justified, false otherwise.
Sets the small button to the left side if true.
Returns true if the SmallButton is of size height, false otherwise.
Defines what icons will the button use for its states.
SmallButton is used to implement small buttons for toolbars, on window headers, etc. Icons contain the frame of the buttons, etc., and are recalled from the closest available stylesheet.