Re: drag and drop not working between windows on 10.7
Re: drag and drop not working between windows on 10.7
- Subject: Re: drag and drop not working between windows on 10.7
- From: Raleigh Ledet <email@hidden>
- Date: Tue, 30 Aug 2011 08:51:58 -0700
On Aug 29, 2011, at 11:03 PM, Michael Link wrote:
> I have a document based app that has a source list (NSOutlineView) that allows drag and drop on itself or another source list (same class) in a different document in the same application.
>
> Everything works on 10.6, in 10.7 drags to the same NSOutlineView are validated as I expect. Drags to the other source list in a different document (different window) are momentarily validated but then immediately invalidated. I can confirm that
This is odd. If it's all in the same process, and it works in one case, it should work in the other. This makes me suspect your code.
>
> - (NSDragOperation)outlineView:(NSOutlineView*)outlineView validateDrop:(id <NSDraggingInfo>)info proposedItem:(id)item proposedChildIndex:(NSInteger)index
>
> is returning the correct operation (copy), but for some reason it doesn't stick. Is there some side effect of the new dragging sessions that might be causing this?
Possibly. But if you haven't adopted the new dragging session API, the old API should still work. Please file a radar and supply a sample project. The sample project if very important to help us solve these kinds of issues.
-raleigh
> I don't see any other delegate methods that would interfere with the drag operation like this.
>
> --
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