Changes the scale of the user coordinate system in a context.
Original signature is 'void CGContextScaleCTM ( CGContextRef c, CGFloat sx, CGFloat sy );'
Available in Mac OS X v10.0 and later.


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