Sets the current stroke color to a value in the DeviceGray color space.
Original signature is 'void CGContextSetGrayStrokeColor ( CGContextRef c, CGFloat gray, CGFloat alpha );'
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)