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Chapter 1. Flash Basics > Always Movie Clips

Always Movie Clips

Every time you create a symbol, you have a choice between Movie Clip, Button, or Graphic behavior. Selecting the Button symbol is often convenient because an instance automatically causes the cursor to change to a “finger” (for the user), and the symbol has provisions for various visual states plus a “hit” state. Buttons are great when you need buttons.

The choice between the Graphic and Movie Clip symbols isn’t as clear. I used to believe, incorrectly, that Graphic symbols were appropriate for static graphics and Movie Clips for multi-frame clips. However, a Graphic symbol should be used in one of only three cases: when you’re creating a multi-frame clip that you want locked to its parent timeline (so that you can scrub—by dragging the red current frame marker—to preview its behavior); when you’re planning to take advantage of one of the special loop settings available only to Graphic symbols (See Figure 1.7); or when you want Flash to stream the contents of the Graphic symbol (instead of loading all frames before proceeding the way Movie Clips do).


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