CursorManager doesn't exist in Flex 3?

programming flash
1

I’m trying to use a custom .gif as a cursor, but for some reason Flex 3 is showing that mx.managers.CursorManager no longer exists.

The code I was trying to use (from http://www.adobe.com/devnet/flex/quickstart/controlling_the_cursor/src/CursorCustom/index.html):


            import mx.controls.Button;
            import mx.managers.CursorManager;
            import flash.events.*;

            // Embed the SWF that will be used as 
            // the custom cursor.        
            [Embed(source="assets/hourglass.swf")]
            public var HourGlassAnimation:Class;

            private const ON_MESSAGE:String = "Custom Cursor ON";
            private const OFF_MESSAGE:String = "Custom Cursor OFF";

            private function busyCursorButtonHandler(event:MouseEvent):void 
            {
                var toggleButton:Button = event.target as Button;
                if ( toggleButton.selected ) 
                {
                    // The setCursor() method returns a numeric ID for
                    // the cursor being set. You can store and use this 
                    // ID later in a removeCursor() call, or, you can
                    // use the static currentCursorID property of the 
                    // CursorManager class to achieve the same result,
                    // as we have done in this example.
                    CursorManager.setCursor(HourGlassAnimation);
                    toggleButton.label = ON_MESSAGE;                
                }
                else
                {
                    CursorManager.removeCursor( CursorManager.currentCursorID );
                    toggleButton.label = OFF_MESSAGE;                
                }
            }

Any ideas?

I should mention I am trying to do -everything- in .AS files, so the tutorials which talk about embedding actionscript in a .fla to just do things like
“***startDrag (”_root.cursor", true);
Mouse.hide();"

***are not exactly what I’m looking for.