Double clicking on headers of NSOutlineView is triggering double
I've a set a double-click action for my NSOutlineView, everything is working well:every time I double click on a row in the table, the correct method is invoked.
However, the same method is invoked when I double click on the header of a column (let's say to change the sort order). I've never noticed this behaviour before, how could I disable it?
检查clickedRow怎么样？
[self.outlineView clickedRow]