Flash 101 (part 5): Spiralling Out Of Control - Dynamic Buttons (Page 4 of 7 )
By allowing authors to separate animation sequences into separate movie clip symbols, Flash makes it possible to add animation and interactivity to buttons as well.
In your existing Flash movie, create a new button symbol named "spiral-button", and insert an instance of the static graphic symbol "spiral-image" for the Up state (in symbol-editing mode). Next, insert instances of the rotating movie clip symbol "spiral-movie" for the Over and Down states. Finally, for the Hit state, draw a filled box which encloses the entire spiral - this identifies the active area of the button.
Now, each time the button symbol receives a "hover" or "click" event, it will automatically activate and play the movie clip.
Go back to the Stage, and insert an instance of your new button symbol "spiral-button". Use Control -> Test Movie to view the movie clip - you'll see something like this:
