Macro

Summary

Executes all drawing function calls to a given port within the body of the macro with foreground and background colors swapped.

Signature

with-inverse-graphics ( port ) &body body => result

Arguments

port

A graphic port

body

A body of Lisp code

Values

result

The return value of the last form executed in body

Description

The with-inverse-graphics macro ensures that all drawing function calls to port within the body of the macro are executed with the foreground and background slots of the graphics state of the port swapped around.