Re: Drag and Drop in Same View
Re: Drag and Drop in Same View
- Subject: Re: Drag and Drop in Same View
- From: Raleigh Ledet <email@hidden>
- Date: Sun, 19 Sep 2010 20:00:04 -0700
NSDragPboard is the name of a pasteboard, not the dragged type. The drag type is the type of data you put on the pasteboard to drag. For example, is you are dragging a URL, then register for kUTTypeURL. If it's private data then it's along these lines:
NSString *myType = UTTypeCreatePreferredIdentifierForTag(kUTTagClassNSPboardType, CFSTR("privateDat", kUTTypeData); // You are using UTIs right?
-(id)init.... {
...
[self registerForDraggedTypes:[NSArray arrayWithObjects:myType, nil]];
...
}
-(void)mouseDown:(NSEvent*)event {
...
[pboard clearContents];
NSPasteboardItem *item = [[[NSPasteboardItem alloc] init] autorelease];
[item setData:data forType:myType];
[pboard writeObjects:[NSArray arrayWithObject:item]];
// start drag
...
}
-raleigh
On Sep 19, 2010, at 7:43 PM, email@hidden wrote:
> Sorry ... I did not say I had done that as follows:
>
> [self registerForDraggedTypes:[NSArray arrayWithObjects:NSDragPboard, nil]];
>
>
>
> On Sep 19, 2010, at 7:19 PM, Raleigh Ledet wrote:
>
>> You need to register as a dragging destination for your dragging type:
>> -registerForDraggedTypes:
>>
>> http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSView_Class/Reference/NSView.html#//apple_ref/occ/instm/NSView/registerForDraggedTypes:
>>
>> -raleigh
>>
>> On Sep 19, 2010, at 5:08 PM, email@hidden wrote:
>>
>>> I do
>>>
>>> dragImage:at:offset:event:pasteboard:source:slideBack:
>>>
>>> in a view's mouseDragged method.
>>>
>>> The view also implements all the correct methods for dragging as outlined in the example Erik Buck referred to. These dragging methods are never called. So what must be done to Drop in the view that originates the Drag?
>>>
>>> It this possible?
>>>
>>> -koko
>>>
>>>
>>>
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