Re: cocoa dragging and constraining coordinates
Re: cocoa dragging and constraining coordinates
- Subject: Re: cocoa dragging and constraining coordinates
- From: Kyle Sluder <email@hidden>
- Date: Mon, 23 May 2011 08:48:58 -0700
On Mon, May 23, 2011 at 8:28 AM, Kurt Sutter <email@hidden> wrote:
> My view implements dragging of the objects it displays. The user should be able to constrain the coordinates of the drag to purely horizontal/vertical by holding down the shift key, i.e. the position of the image passed to dragImage:at:offset:event:pasteboard:source:slideBack should be constrained to a purely horizontal/vertical offset when the users holds the shift key down. I have checked out the NSDraggingDestination protocol but found nothing helpful.
Are you trying to do something similar to what NSTableView does when
dragging NSTableColumns? If so, forget about using NSDraggingSource
and just implement it directly in your mouse tracking loop.
--Kyle Sluder
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