Buttons can be used to trigger events within your applet, like playing a sound, showing or hiding an object, animating an object, or moving to another page. The events are called Actions, and each button event (touch, release, etc.) can trigger one or more actions.
Basic Button : The basic button is software generated. You can set the button's position, color, size, shape, text, behavior, and actions.
Image Button : The image button uses one or more images to define the appearance (normal state and tap state) of the button. You can set position, behavior and actions.
Hotspot : A Hotspot is not visible, making it an "invisible button". You can specify the position, size, shape, behavior, and actions.