Re: This is more of a Drag than I thought it would be
Re: This is more of a Drag than I thought it would be
- Subject: Re: This is more of a Drag than I thought it would be
- From: Brian Webster <email@hidden>
- Date: Fri, 14 Dec 2001 11:29:08 -0600
On Friday, December 14, 2001, at 09:38 AM, cocoa-dev-
email@hidden wrote:
First, can you set up an NSTextField as a dragging destination
for files?
Yes, there shouldn't be a problem with this. It's not clear
from your explanation, but it sounds like you might be
implementing the draggingEntered etc. methods in your text
field's delegate. In order to drag something into an
NSTextField, you must make a subclass of it and implement the
dragging methods in your subclass.
Second, how do you set an NSOutlineView/NSTableView to be a dragging
source?
As I mentioned above, I have successfully made these dragging
destinations. What I haven't been able to do is drag any item that's in
my outline view. Regardless of whether I drag horizontally or
vertically
(and I do have [fwOutlineView setVerticalMotionCanBeginDrag:YES] set in
my awakeFromNib), I don't get a drag. Vertical dragging always gives me
a drag select instead of picking up the item I am holding. I
went so far
as to put some code in my outlineView:writeItems:toPasteboard: method
instead of simply returning YES, but that had no effect.
Firstly, be aware that there's a little "feature" in
NSOutlineView's dragging methods in that it will only start a
drag if you start the drag by clicking in the outline table
column (the one with the disclosure triangles). The second
thing I'd try is to make sure your data source's method is
actually getting called (i.e. put in an NSLog). It's very easy
to mistype the method declaration when implementing
delegate/data source methods. I remember one person who
implemented outlineView:writeRows:toPasteboard: instead of
outlineView:writeItems:toPasteboard: and couldn't figure out why
it didn't work. D'oh!
--
Brian Webster
email@hidden
http://homepage.mac.com/bwebster