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Re: yearly NSDraggingInfo -draggedImage question (BEWARE!)
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Re: yearly NSDraggingInfo -draggedImage question (BEWARE!)


  • Subject: Re: yearly NSDraggingInfo -draggedImage question (BEWARE!)
  • From: Nathan Vander Wilt <email@hidden>
  • Date: Thu, 20 Mar 2008 15:15:35 -0700

[sending to the list this time, I might maybe someday eventually get used to the reply-to policy here.]
On Mar 20, 2008, at 3:00 PM, Sherm Pendley wrote:

On Thu, Mar 20, 2008 at 5:19 PM, Nathan Vander Wilt <email@hidden > wrote:
I implemented a dragging destination, and only get nil from [sender
draggedImage]. Why?


My car wouldn't start this morning. Why not?

Probably the aliens! :-)

If a more detailed explanation would help:


I subclassed an NSImageView to turn it into a dropbox to help me prototype a file-opening feature.


I implemented the following method in my DropBox class:

- (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender {
	printf("Dragged Image: %x\n", (NSUInteger)[sender draggedImage]);
	return NSDragOperationLink;
}

When I hover any file/folder from the Finder over this drop box, I get:
Dragged Image: 0
in the debugging console. Likewise if I check it in my prepare/ performDragOperation, this value is always nil.


The documentation says nothing about this method ever returning nil, so it's even more suprising to me that it would *always* return nil. I would expect it to give back a reference to the file/folder icon image that I'm dragging around underneath the cursor. Is that not what this method is documented to do?

thanks,
-natevw
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  • Follow-Ups:
    • Re: yearly NSDraggingInfo -draggedImage question (BEWARE!)
      • From: Dave Hersey <email@hidden>
References: 
 >yearly NSDraggingInfo -draggedImage question (BEWARE!) (From: Nathan Vander Wilt <email@hidden>)
 >Re: yearly NSDraggingInfo -draggedImage question (BEWARE!) (From: "Sherm Pendley" <email@hidden>)

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