For some reason I have difficulties with this dragging/dropping
Probably because I haven’t used it a lot until now
At this point It is possible in my application to drag the documents from the listbox in the same listbox, because also dropping documents in the listbox is enabled
This is of course not what I want, because now the documents are getting duplicated
I know I can prevent dragging specific objects from specific sources
I thought I should use “On drag over”, but this event is not fired for some reason
How can I prevent dropping documents on the same source where I am dragging from?