Adobe® Flex® 4 Language Reference (Flex 4)

<fx:Library> tag implemented by the compiler

You use the <fx:Library> tag to define zero or more named graphic <fx:Definition> children. The definition itself in a library is not an instance of that graphic, but it lets you reference that definition any number of times in the document as an instance.

MXML Syntax

The <fx:Library> tag has the following syntax:

    <fx:Library>
        <fx:Definition name=defName> 
            <!-- Non-visual declarations. -->
        </fx:Definition>
        ...
        <fx:Definition name=defName> 
            <!-- Non-visual declarations. -->
        </fx:Definition>
    </fx:Library>

The <fx:Library> tag must be the first child of the document's root tag. You can only have one <fx:Library> tag per document.

The following example defines a single graphic in the <fx:Library> tag, and then uses it three times in the application:

    <?xml version="1.0" encoding="utf-8"?>
    <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                   xmlns:mx="library://ns.adobe.com/flex/mx"
                   xmlns:s="library://ns.adobe.com/flex/spark">
    
        <fx:Library>
            <fx:Definition name="MyTextGraphic">
                <s:Group>
                    <s:Label width="75">
                        <s:text>Hello World!</s:text>
                    </s:Label>
                    <s:Rect width="100%" height="100%">
                        <s:stroke>
                            <s:SolidColorStroke color="red"/>
                        </s:stroke>
                    </s:Rect>
                </s:Group>
            </fx:Definition>
        </fx:Library>
    
        <s:VGroup left="20" top="20">
            <fx:MyTextGraphic/>
            <fx:MyTextGraphic/>
            <fx:MyTextGraphic/>
        </s:VGroup>

    </s:Application>