ABPeoplePickerView Drag & Drop

I have an application with an ABPeoplePickerView in it. I notice that drag & drop does not work within the ABPeoplePickerView itself (that is, one cannot drag an ABPerson from the "Name" column into an ABGroup in the "Group" column, like one can in the Address Book application). Should th

getting NSTableView -selectedColumn or -selectedCell

I'm trying to get the selected cell of an NSTableView when selected by the user. I am using the delegate method tableViewSelectionDidChange: and within it have tried calling both - selectedColumn and I've tried -selectedCell. -selectedColumn always returns -1, and -selectedCell always retu