Returns the column number in which the given matrix is located.
Original signature is '- (NSInteger)columnOfMatrix:(NSMatrix *)matrix'
Available in Mac OS X v10.0 and later.


- matrix (NSMatrix)
- The matrix for which to return the column number.

The index of the column in which the specified matrix appears.

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