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DropTargetAdapter.dragOver [message #466559]

Wed, 11 January 2006 16:21

Hans

Messages: 36
Registered: July 2009

Member

I implement drag and drop from a table into a TreeViewer. The drop
operation is not valid on all nodes in the tree, so I have overloaded
dragOver and set event.detail = DND.DROP_NONE in these cases. However,
all subsequent calls to dragOver already have the event.detail set to 0,
so that if the user has reached a valid dropping item, then I cannot set
event.detail back to the correct value: I have no information whether
the user currently wants to MOVE or COPY! To summarize: Once I set it
to DROP_NONE, the information to set it back is lost. Any solution to
this dilemma?

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