Flex中CursorManager的应用

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white" viewSourceURL="srcview/index.html">

    <mx:Script>
        <![CDATA[
            import mx.managers.CursorManager;

            [Bindable]
            [Embed(source="assets/bug.png")]
            private var BugIcon:Class;

            [Bindable]
            [Embed(source="assets/bug_delete.png")]
            private var BugDeleteIcon:Class;

            private var cursorID:int;
        ]]>
    </mx:Script>

    <mx:ApplicationControlBar dock="true">
        <mx:Button label="setBusyCursor()"
                click="CursorManager.setBusyCursor();" />
        <mx:Button label="removeBusyCursor()"
                click="CursorManager.removeBusyCursor();" />
    </mx:ApplicationControlBar>

    <mx:Button label="setCursor()"
            width="100"
            height="100"
            rollOver="cursorID = CursorManager.setCursor(BugIcon);"
            rollOut="CursorManager.removeCursor(cursorID);" />

</mx:Application>