It turns out that this was caused by manipulating the GUI outside the
main thread. Once I realized that and refactored accordingly, the
issue went away. No wonder I was having trouble duplicating the
symptoms!
Thanks to everybody who helped me figure this out.
-Michael
On May 5, 2008, at 4:02 PM, Michael Gardner wrote:
I'm trying to implement drag & drop in an NSView subclass. I made
sure that the source returns NSDragOperationMove in -
draggingSourceOperationMaskForLocal:, and that the destination calls
-registerForDraggedTypes: with the same (custom) type that the
source uses for the drag operation.
The drag operation starts properly, but the destination's -
draggingEntered: method never gets called, no matter what I do. What
could cause this? Does it matter if the source and destination are
the same object?
-Michael
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