код взорван может помочь вам.Я использую этот код в Flex 4.5.Он отлично работает.
http://code.google.com/p/force-explorer/source/browse/trunk/Flex/Explorer/src/components/DraggablePanel.as?r=8
package components
{
import flash.events.MouseEvent;
import mx.managers.DragManager;
import spark.components.Group;
import spark.components.Panel;
/**
* A simple extension of the Spark Panel component
* that enables dragging.
*/
public class DraggablePanel extends Panel
{
//--------------------------------------
// Constructor
//--------------------------------------
public function DraggablePanel()
{
super();
}
//--------------------------------------
// Skin Parts
//--------------------------------------
/**
* The skin part that represents the title bar of the underlying Panel.
* NOTE: The default PanelSkin already has this, it's just not defined as a skinPart in the Panel class.
* We want it so that we can capture dragging.
*/
[SkinPart(required="true")]
public var topGroup:Group;
//--------------------------------------
// Overridden Methods
//--------------------------------------
protected override function partAdded( partName:String, instance:Object ) : void
{
super.partAdded( partName, instance );
if (instance == topGroup)
{
Group( instance ).addEventListener( MouseEvent.MOUSE_DOWN, topGroup_mouseDownHandler );
Group( instance ).addEventListener( MouseEvent.MOUSE_UP, topGroup_mouseUpHandler );
}
}
protected override function partRemoved( partName:String, instance:Object ) : void
{
super.partRemoved( partName, instance );
if (instance == topGroup)
{
Group( instance ).removeEventListener( MouseEvent.MOUSE_DOWN, topGroup_mouseDownHandler );
Group( instance ).removeEventListener( MouseEvent.MOUSE_UP, topGroup_mouseUpHandler );
}
}
//--------------------------------------
// Event Handlers
//--------------------------------------
protected function topGroup_mouseDownHandler( event:MouseEvent ):void
{
if ( !DragManager.isDragging )
startDrag();
}
protected function topGroup_mouseUpHandler( event:MouseEvent ):void
{
stopDrag();
}
}
}
http://code.google.com/p/force-explorer/source/browse/trunk/Flex/Explorer/src/components/DraggablePanel.as?r=8