Chia sẻ các đối tượng giữa các ứng dụng trên máy tính của bạn là tốt, nhưng đôi khi bạn sẽ muốn nhập khẩu các tập tin toàn bộ vào pháo hoa. Điều này là dễ dàng như mở PNG các tập tin của pháo hoa. Quá trình này là hơi khác nhau tùy thuộc vào cho dù bạn đang nhập khẩu tập tin hình ảnh bitmap hoặc nghệ thuật vector. | Chapter 17 Using Symbols and Libraries 573 To modify a Button Symbol double-click its name or its symbol preview in the Library panel or select it in the symbol list and choose Edit Symbol from the Library panel Options menu. Converting existing objects into Button Symbols Converting an existing object into a Button Symbol is a quick way to get a button started. Because each state of a multistate button is usually a variation on the first state converting an existing object into a Button Symbol and then modifying it slightly in the Button Editor to create Over Down and Over While Down states is an excellent strategy. To convert an object into a button select it and choose Modify o Symbol o Convert to Symbol or use the keyboard shortcut F8. Choose Button from the Type setting in the Symbol Properties dialog box give your button a unique name in the Name box and click OK. Fireworks converts your object into a Button Symbol creating a slice object on top of it in the document window as shown in Figure 17-11. Figure 17-11 Converting an object into a Button Symbol also covers it with a slice object. Add more states to your button by editing it in the Library panel. Converting Button Symbols into Graphic Symbols If you convert a Button Symbol into a Graphic Symbol by editing its properties in the Symbol Properties dialog box the slice object that makes up the Active Area of the button remains with the symbol. To remove it edit your symbol in the Symbol Editor and manually delete the slice object. Using Button Instances In addition to the standard modifiable Instance properties such as opacity X and Y coordinates width height and Live Effects Button Instances have two additional 574 Part IV Coordinating Workflow editable properties their Button Text and the links that are applied to their slice objects see Figure 17-12 . Selecting the Button Instance and viewing the Property inspector allows you to modify both of these enabling you to assign each Button Instance a .