There are currently no post drag messages available.
We know this is frustrating, and I'll add your vote to the related feature requests.
Is there any progress on this issue? Any callbacks/events fired when an asset has been added to the project?
There has been no change to drag and drop handling.
No callback or event mechanisms have been added, although a panel can tell whether the project changed, by counting projectItems before and after the drop.
Wow, quick reply, thx!
Counting the projectitems before/after is indeed a valid workaround to know if the drag-and-drop import has succeeded.