Specifies a dither for use within a specified body of code.
graphics-ports
with-dither (dither-or-size) &body body => result
|   dither-or-size⇩  |    
See Description.  | 
|   body⇩  |    
A body of Lisp code.  | 
|   result  |    
The return value of the last form executed in body.  | 
The macro with-dither specifies a dither for use within body. dither-or-size can be a dither mask object from make-dither or a size, in which case a dither of that size is created.
with-dither is deprecated. Dithers do not affect drawing or anti-aliasing.
CAPI User Guide and Reference Manual (Macintosh version) - 01 Dec 2021 19:31:44