Using a TitleWindow will allow you to get Close button. You
need to implement drag and drop yourself as that's not part of the
Flex package when it comes to Panel or TitleWindow.
Did you mean you want to move windows around or did you mean
you want to move and drop them onto something (like a 'trashcan')?
If you meant the latter, you can detect a mouseDown event
over the TitleWindow's header area and set a flag. When the mouse
moves AND that flag is set, use the mx.managers.DragManager to
initiate a drag-and-drop proxy. You can handle the dragOver and
dragEnter and dragDrop events on potential targets (eg, a trashcan