On Thu, Mar 20, 2008 at 7:09 PM, Nathan Vander Wilt < [EMAIL PROTECTED]> wrote:
> On Mar 20, 2008, at 3:31 PM, Dave Hersey wrote: > > Do you get anything different if you print the object as a pointer > > (%p)? Printing it as an int value is... weird. > > > > Try: > > > > printf("Dragged Image: %p\n", (void *)[sender draggedImage]); > > That's a useful format I'd either forgotten or never known, thanks! I > was just casting to an int to get rid of the warning for the hex, > though. (In C casts are pretty weak.) Now from all three methods I > always get: > Dragged Image: 0x0 > ...which is prettier, but still doesn't explain why the return value > is always nil. Or why Sherm's car wouldn't start. > > If this is a bug, it seems to have been around since before 2004. (See > list of unanswered links in OP.) If it's a documentation omission, > nobody seems to know what the docs *should* say, also since 2004. If > it's user error, I'll still blame the docs, but at least I can make my > bug report better! > > Maybe this would be a better way of asking: > > What is the NSDraggingInfo protocol's -draggedImage method supposed to > return, and under what circumstances? Well, the glib answer is that it returns whatever the dragging source passed as the first argument to -dragImage:at:offset:event:pasteboard:source:slideBack:. Seriously though, I can't explain what you're seeing, but I can duplicate it. In my tests, I couldn't get anything other than NULL from -draggedImage for dragged files from either Finder or Xcode. I even tried pasting a custom icon onto a file, which made no difference. What I suspect is that both apps are passing NULL to the above method, and so that's what gets passed along to your app. As a workaround, you could get the file path from the pasteboard, then call NSWorkspace's -iconForFile: to get an NSImage of the file's icon. I suspect you're probably already doing that though. I'd file a bug report - that this has lasted for so long implies that it's normal behavior, and in that case the documentation really should mention the possibility of -draggedImage returning NULL. Oh, and I apologize for the snarky tone of my first response. Thanks for being a good sport about it. :-) sherm-- _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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]