I tried by setting break point on objc_exception_throw. Unable to get anything from the stack trace.
Following is the stack trace. #0 0x00007fff835d70da in objc_exception_throw () #1 0x00007fff81060c9b in -[NSBrowser _beginColumnDragging] () #2 0x00007fff8105b04f in -[NSBrowserTableView draggingEntered:] () #3 0x00007fff81114bac in NSCoreDragTrackingProc () #4 0x00007fff825b24ce in DoTrackingMessage () #5 0x00007fff825b27e0 in SendTrackingMessage () #6 0x00007fff825b4001 in DragInApplication () #7 0x00007fff825b4b1d in CoreDragStartDragging () #8 0x00007fff81115eb8 in -[NSCoreDragManager _dragUntilMouseUp:accepted:] () #9 0x00007fff811158fe in -[NSCoreDragManager dragImage:fromWindow:at:offset:event:pasteboard:source:slideBack:] () #10 0x00007fff813d0a72 in -[NSWindow(NSDrag) dragImage:at:offset:event:pasteboard:source:slideBack:] () #11 0x00007fff812dd24d in -[NSTableView _doImageDragUsingRowsWithIndexes:event:pasteboard:source:slideBack:startRow:] () #12 0x00007fff8105b134 in -[NSBrowserTableView _doImageDragUsingRowsWithIndexes:event:pasteboard:source:slideBack:startRow:] () #13 0x00007fff80f2e2ca in -[NSTableView _performDragFromMouseDown:] () #14 0x00007fff80f2cb9b in -[NSTableView mouseDown:] () #15 0x00007fff8105b961 in -[NSBrowserTableView mouseDown:] () #16 0x00007fff80ecf34f in -[NSWindow sendEvent:] () #17 0x00007fff80e04a86 in -[NSApplication sendEvent:] () #18 0x00007fff80d9b4da in -[NSApplication run] () #19 0x00007fff80d941a8 in NSApplicationMain () #20 0x0000000100001e54 in start () *** Canceling drag because exception 'NSInternalInconsistencyException' (reason 'Can not nest column dragging sessions') was raised during a dragging session I think the above exception says that, its not possible to nest dragging sessions. I'm not sure where its happening. Thanks, Naresh Kongara On Apr 15, 2011, at 11:27 AM, Corbin Dunn wrote: > > On Apr 14, 2011, at 5:16 PM, Naresh Kongara wrote: > >> HI All, >> >> I implemented drag and drop in NSBrowser, through which I can drag items >> from other views or windows of the applications. The drag and drop in >> NSBrowser is implemented through its delegate methods. >> Everything is going fine except I'm getting the following exception while >> dropping, after which the draggedImage is slide back to original position. >> >> *** Canceling drag because exception 'NSInternalInconsistencyException' >> (reason 'Can not nest column dragging sessions') was raised during a >> dragging session >> >> >> Does any one has any idea/solution for the above exception. > > Break on objc_exception_throw and look at the bt. > > Don't forget that it is your number on breakpoint. > http://www.corbinstreehouse.com/blog/2008/08/your-most-important-breakpoint-in-cocoa/ > > Xcode 4 makes it even easier to break on it. > > corbin > > _______________________________________________ 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 arch...@mail-archive.com
