Hmm... I'm returning the NSDragOperationNone now, all I get is an image of what is being dragged no other symbol and the outlineview won't accept the drop which is correct. When I have a valid selection, I get the other symbol for copy(green circle with plus sign), or for Move, the outlineview highlights the drop point.
-Tony On Jun 16, 2010, at 7:11 PM, Kyle Sluder wrote: > On Wed, Jun 16, 2010 at 6:55 PM, Tony Romano <[email protected]> wrote: >> Briefly, in a DnD operation all the nodes selected need to be siblings of >> each other. During validateDrop I check for this and it calculates it just >> fine. However, I need to set the DnD image to something indicating this is >> not allowed, I thought using the International NO symbol made sense but it >> is not defined as one of the NSDragOperation... flags. So I am thinking >> either this is not HIG compliant or it is and I just need to supply my own. >> I know I have seen other apps do it but it's doesn't been it's HIG compliant. > > I believe that's a Carbon thing; there is also no standard "not > allowed" cursor. Just return NSDragOperationNone and let the > slide-back animation do its job. > > If you want to explain to the user why they can't drag, maybe you > could use a tooltip? Query the draggingInfo in -draggingUpdated: and > use it to position a borderless window that describes why the > operation can't be done. > > --Kyle Sluder > -Tony _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
