Dear all

i have problem in gxt regarding validation on drag and drop what i need is example that show me how to validate
drop on node i tried something like

event.setCancelled(true) <-- they says in docs that it cancel event but i see that the node is added to the ui
although i cancelled event (i need to prevent this)

event.getStatus().setStatus(false) <-- they says in docs that update the proxy and set the status to false
to show invalid drop but it always show valid drop sign the drop
operation took place

please help me in validate drop operation and cancel it if it is invalid so the
ui not to updated and prevented from adding node in the wrong place

thanks all