Posted before an item is collapsed (after the user clicks the arrow but before the item is collapsed).
The notification object is the NSOutlineView object that contains the item about to be collapsed. A collapsed item’s children will lose their status as being selected. The userInfo dictionary contains the following information:
KeyValue@"NSObject"The item about to be collapsed (an id)
Available in Mac OS X v10.0 and later.
Declaration Syntax
Version Information
- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)