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PODrag & drop (<NSDraggingDestination>) in Cocoa does not work
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  1. PODrag & drop (<NSDraggingDestination>) in Cocoa does not work
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    copied!<p>I want to implement some "simple" drag &amp; drop into my Mac application. I dragged in a view and entered "MyView" in my nib file accordingly.However I do not get any response in my console (I try to log messages whenever any of the protocol methods are triggered)</p> <p>I have subclassed NSView like this: </p> <pre><code>@interface MyView : NSView &lt;NSDraggingDestination&gt;{ NSImageView* imageView; } </code></pre> <p>and implement it like this:</p> <pre><code>- (id)initWithFrame:(NSRect)frame { self = [super initWithFrame:frame]; if (self) { [self registerForDraggedTypes:[NSImage imagePasteboardTypes]]; NSRect rect = NSMakeRect(150, 0, 400, 300); imageView = [[NSImageView alloc] initWithFrame:rect]; [imageView setImageScaling:NSScaleNone]; [imageView setImage:[NSImage imageNamed:@"test.png"]]; [self addSubview:imageView]; } return self; } - (NSDragOperation)draggingEntered:(id &lt;NSDraggingInfo&gt;)sender{ NSLog(@"entered"); return NSDragOperationCopy; } - (NSDragOperation)draggingUpdated:(id &lt;NSDraggingInfo&gt;)sender{ return NSDragOperationCopy; } - (void)draggingExited:(id &lt;NSDraggingInfo&gt;)sender{ NSLog(@"exited"); } - (BOOL)prepareForDragOperation:(id &lt;NSDraggingInfo&gt;)sender{ NSLog(@"som"); return YES; } - (BOOL)performDragOperation:(id&lt;NSDraggingInfo&gt;)sender { NSPasteboard *pboard = [sender draggingPasteboard]; if ( [[pboard types] containsObject:NSURLPboardType] ) { NSURL *fileURL = [NSURL URLFromPasteboard:pboard]; NSLog(@"%@", fileURL); } return YES; } - (void)concludeDragOperation:(id &lt;NSDraggingInfo&gt;)sender{ NSLog(@"conclude sth"); } - (void)draggingEnded:(id &lt;NSDraggingInfo&gt;)sender{ NSLog(@"ended"); } - (BOOL)wantsPeriodicDraggingUpdates{ NSLog(@"wants updates"); } - (void)updateDraggingItemsForDrag:(id &lt;NSDraggingInfo&gt;)sender NS_AVAILABLE_MAC(10_7){ } </code></pre>
 

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