Sent to the delegate to allow or prohibit the specified column to be dragged to a new location.
Original signature is '- (BOOL)tableView:(NSTableView *)tableView shouldReorderColumn:(NSInteger)columnIndex toColumn:(NSInteger)newColumnIndex'
Available in Mac OS X v10.6 and later.

C# | Visual Basic | Visual C++ |
public event NSTableView..::..TableViewShouldReorderColumnToColumnEventHandler TableViewShouldReorderColumnToColumn
Public Event TableViewShouldReorderColumnToColumn As NSTableView..::..TableViewShouldReorderColumnToColumnEventHandler
public: event NSTableView..::..TableViewShouldReorderColumnToColumnEventHandler^ TableViewShouldReorderColumnToColumn { void add (NSTableView..::..TableViewShouldReorderColumnToColumnEventHandler^ value); void remove (NSTableView..::..TableViewShouldReorderColumnToColumnEventHandler^ value); }

YES if the column reordering should be allowed, otherwise NO.

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