Problem with file drag-and-drop in Cocoa

Question

I'm experiencing some difficulties here.

I have a drop zone (custom view) with it's own class. Everything works great so far with it. The problem is that I can't get the result from the drop operation outside the class of the drop zone. I read everything I found in the net.

For instance, I would like my drop zone to count the lenght of the Array with the objects (files) dropped and set this number to a NSTextField. I know how to count the array, I don't know how to get this value and set it to the text field.

Answer 1

将数组发送到您的控制器（最有可能的方法是让您的拖放区视图的标头声明一个委托协议，并给拖放区视图本身一个委托属性，并让控制器遵循该协议并将其自身指定为该委托），以及让您的控制器将计数发送到文本字段。

Answer 2

I'm really confused. I got the idea with sending the array to the controller. Maybe my english is too poor to deal with the whole explanation. I really won't bother anyone so only who want, please take a look at my test project. DOWNLOAD 2MB+

It should be great if you leave some comments.