How do I use two NStableviews on the same interface?

I am re-phrasing an earlier question and re-posting. I made the original question too complicated; I understand how the set up a TableView and get files to drop into it. What I don't understand is; 开发者_StackOverflow中文版How do I get two NSTableViews on one interface and get the contents to display in what ever table I choose? For eample, I want to drag files/folders into the first TableView, and when I double click on one, I want the contents of the file/folder to display in the second table.

Thanks

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Provide the two table views with two different dataSource delegates, or, in the single dataSource object observe the UITableView address that's passed on every call.