how to close a cgui window?

I know it's in the early stage(probably abandoned tho), but it's awesome, so I would like to use it in my animation editor.

Without any documentation it wasnt easy even to find out how can I display something, but I dont have a single idea how to use the window widget's close button.

I tried this, but nothing happened:

+ System: Start of layout

-> InputSystem: Set mouse position to X:Window.X+Window.Width/2 Y:Window.Y+Window.Height/2

-> CGUI: Load layout "unnamed.layout" with widget "" as parent

-> CGUI: Widget "windowww" set event to On mouse move over (sender, left, top)

+ CGUI: On Widget "windowww" mouse move over

-> CGUI: Destroy widget "windowww"

Of course this should close it when the the mouse is on it, but it didnt worked also. Ideas, anyone?

Edit: also I have no idea how to retrive any of the properties, this is a lot more important because the scrollbars are useless if I can't.