the Map start. the 3 addaction to fire of Drag and Drop.
the result will be needed Drag from Listbox and Drop to Listbox the Dropevent must say Drop on Lisbox not the controllgroup.
All Drag von Listbox
"Drag-Drop On ListBox" - Is Eventhandler on Listbox
result: Fire Drag , dont Fire Drop
"Drag-Drop On ControllGroup" - Is Eventhandler on ControllGroup
result: dontfire Drag, Fire Drop (target controllGroup (drop on Listbox))
"Drag-Drop On all" - Is Eventhandler on Listbox and Controllgroup
result: fire on Drag (Listbox), fire on drop of Listbox (result controllGroup)