Hi Dimitar,
I’m afraid you didn’t answered my question.
Please, in left tree of that demo, try to drag item ‘Solutions’ and drop it to ‘Education’. How can I add listener to that event when tree itself refuses to create circular reference, or how can I detect this from arguments of dragEnd function or event? How does jqxTree expose to dragEnd function/event failing result of drag&drop operation?
Thank you, Stork.