15.7.1 New Graphic Tools API

The lw-gt package contains a basic implementation of an API for drawing resizable objects, currently simple bar charts and graphs.

This new API is not polished or complete, so we would be pleased to read your ideas for improvements and extensions. Documentation is in the chapters "Graphic Tools drawing objects" and "LW-GT Reference Entries" in the CAPI User Guide and Reference Manual .

15.7.2 invalidate-rectangle-from-points

The new function gp:invalidate-rectangle-from-points invalidates a rectangle specified by two points, causing it to be redisplayed.

15.7.3 port-owner

The new function gp:port-owner returns the port owner of a graphics port.