Re: Newbie: Getting path of file dragged onto NSImageView
Re: Newbie: Getting path of file dragged onto NSImageView
- Subject: Re: Newbie: Getting path of file dragged onto NSImageView
- From: Esteban Uribe <email@hidden>
- Date: Wed, 09 Apr 2003 13:34:20 -0700
Hi,
On Wednesday, April 09, 2003, at 01:03PM, onegecko.com <email@hidden> wrote:
>
Okay,
>
>
Doing a desperate and epiphanic search on cocoa.mamasam.com for "drag drop
>
file path" -- don't know why i didn't think of that at 02:00 this morning
>
-- I found a message saying to override the inherent drag and drop
>
capabilities of NSImageView
>
<http://cocoa.mamasam.com/COCOADEV/2002/05/2/35227.php>. Progress! :D
>
Yeah the message you refer to explains it correctly (though with no sample)
I just did this a couple of days ago, though i currently dont have access
to my cocoa dev machine, so you'll have to wait for onegecko.com to post
sample code, or until later in the day when i can do so.
Basically you have to subclass NSImageView, and override the
NSDraggingDestination protocol methods -draggingEntered and
-prepareForDragOperation.
Then you retrieve the draggingPasteboard from the object being passed
to either of those methods in sender (a NSDraggingInfo protocol conforming object).
Examine this draggingPasteboard for NSFilenamesPboardType type (using -propertyListForType
if you expect an array or some such other plist representable object, i.e. dictionary).
You usually get an array with one or more elements, each element is a string with the file path
of each file dragged into the NSImageView.
I might have missed a step or two but it should be apparent how everything goes
once you follow these steps. :-)
I hope this helps.
-Esteban
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