Initializes the receiver, a newly allocated NSBitmapImageRep object, with bitmap data read from a rendered image.
Original signature is '- (id)initWithFocusedViewRect:(NSRect)rect'
Available in Mac OS X v10.0 and later.


- rect (NSRect)
- A rectangle that specifies an area of the current window in the current coordinate system.

Returns the initialized object or nil If for any reason the new object can’t be initialized.

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