> On 04.12.2015, at 11:33, Stephan Eggermont <stephan at stack.nl> wrote:
> 
> On 04-12-15 01:54, tim Rowledge wrote:
>> Hi,
>> so now I know why I can get so many spurious enter/leave events. It’s really embarrassingly dumb…
>> 
>> When you are dragging a morph around and have the morph positioned at the event cursor point - ie not centred under it as you eventually want - then moving even moderately quickly can result in the cursor point being over the dragged morph. Which is not the canvas morph. So you’ve left the canvas morph; and you get a mouse leave event. D’oh! Then the fake-cursor-morph gets deleted, you are now over the canvas morph so you get a mouse enter event, and so on.
> 
> Hmm. conceptually I would expect to get no spurious enter/leaves when the morph you're dragging around is either a submorph of the canvas, or grabbed by the hand.

This. A grabbed morph is not in the world so should not generate events.

- Bert -



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