The source implements -draggingSourceOperationMaskForLocal: and -
mouseDown: (for initiating the drag).
The destination implements -draggingEntered:, -
prepareForDragOperation:, and -performDragOperation:.
I checked the pasteboard's types list, and the result is as expected.
For reference, here's how I start the drag:
NSPasteboard * pboard = [NSPasteboard pasteboardWithName: NSDragPboard];
[pboard declareTypes: [NSArray arrayWithObject: MyPasteboardType]
owner: nil];
if ([pboard setData: dragData forType: MyPasteboardType])
[self dragImage: dragImage at: dragLoc offset: NSZeroSize event:
event pasteboard: pboard source: self slideBack: YES];
-Michael
On May 5, 2008, at 4:25 PM, Stéphane Sudre wrote:
On May 5, 2008, at 11:02 PM, Michael Gardner wrote:
I'm trying to implement drag & drop in an NSView subclass. I made
sure that the source returns NSDragOperationMove in -
draggingSourceOperationMaskForLocal:, and that the destination
calls -registerForDraggedTypes: with the same (custom) type that
the source uses for the drag operation.
The drag operation starts properly, but the destination's -
draggingEntered: method never gets called, no matter what I do.
What could cause this? Does it matter if the source and destination
are the same object?
What methods did you implement in your view for drag& drop?
Did you log the content of the pasteboard after the drag is initiated?
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