Asks the delegate for a controller that provides a preview column for the specified leaf item.
Original signature is '- (NSViewController *)browser:(NSBrowser *)browser previewViewControllerForLeafItem:(id)item'
Available in Mac OS X v10.6 and later.

C# | Visual Basic | Visual C++ |
public event NSBrowser..::..BrowserPreviewViewControllerForLeafItemEventHandler BrowserPreviewViewControllerForLeafItem
Public Event BrowserPreviewViewControllerForLeafItem As NSBrowser..::..BrowserPreviewViewControllerForLeafItemEventHandler
public: event NSBrowser..::..BrowserPreviewViewControllerForLeafItemEventHandler^ BrowserPreviewViewControllerForLeafItem { void add (NSBrowser..::..BrowserPreviewViewControllerForLeafItemEventHandler^ value); void remove (NSBrowser..::..BrowserPreviewViewControllerForLeafItemEventHandler^ value); }

A view controller that provides a preview column, or nil to suppress the preview column.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later)