Invoked to allow the delegate to control cell expansion for a specific column and item.
Original signature is '- (BOOL)outlineView:(NSOutlineView *)outlineView shouldShowCellExpansionForTableColumn:(NSTableColumn *)tableColumn item:(id)item'
Available in Mac OS X v10.5 and later.

C# | Visual Basic | Visual C++ |
public bool OutlineViewShouldShowCellExpansionForTableColumnItemMessage( NSOutlineView outlineView, NSTableColumn tableColumn, Id item )
Public Function OutlineViewShouldShowCellExpansionForTableColumnItemMessage ( _ outlineView As NSOutlineView, _ tableColumn As NSTableColumn, _ item As Id _ ) As Boolean
public: bool OutlineViewShouldShowCellExpansionForTableColumnItemMessage( NSOutlineView^ outlineView, NSTableColumn^ tableColumn, Id^ item )

- outlineView (NSOutlineView)
- The outline view that sent the message.
- tableColumn (NSTableColumn)
- A table column in the outline view.
- item (Id)
- An item in the outline view.

YES to allow an expansion tooltip to appear in the column tableColumn for item item, otherwise NO.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)