Returns the ideal width for a column.
Original signature is '- (CGFloat)browser:(NSBrowser *)browser sizeToFitWidthOfColumn:(NSInteger)columnIndex'
Available in Mac OS X v10.3 and later.


The ideal width of the column. This method is used when performing a “right-size” operation, that is, when sizing a column to the smallest width that contains all the content without clipping or truncating. If columnIndex is –1, you should return a size that can be uniformly applied to all columns (that is, every column will be set to this size). Returning a value of -1 allows you to opt-out of providing a width for the requested column.

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